Акад. дмн дтн Красимир Атанасов | Публикации

1. Sotirova, E., A. G. Shannon, K. T. Atanassov. The Modelling of University Processes through Intuitionistic Fuzzy Evaluations. Cambridge Scholars Publishing, Newcastle upon Tyne, 2022.
2. Atanassov, K., P. Marinov, N. Ikonomov, D. Mavrov, V. Bureva, P. Vassilev, O. Roeva, V. Atanassova, H. Tsakov, A. Alexandrov. Game Method for Modelling of Forest Fires. “Prof. Marin Drinov” Publishing House of Bulgarian Academy of Sciences, Sofia, 2022.
3. Sándor, J., K. Atanassov, Arithmetic Functions. Nova Science Publishers, 2021.
4. Atanassov, K., Interval-Valued Intuitionistic Fuzzy Sets. Springer, Cham, 2020.
5. Atanassov. K. Generalized Nets and Intuitionistic Fuzziness in Data Mining. “Prof. Marin Drinov” Academic Publishing House, Sofia, 2020.
6. Vassilev, P., K. Atanassov, Modifications and Extensions of Intuitionistic Fuzzy Sets. “Prof. M. Drinov” Academic Publishing House, Sofia, 2019.
7. Atanassov, K., Intuitionistic Fuzzy Logics, Springer, Cham, 2017.
8. Atanassov, K., On Some Pascal’s Like Triangles. Warsaw School of Information Technology of Polish Academy of Sciences, Warsaw, 2015.
9. Atanassov, K., Index Matrices: Towards an Augmented Matrix Calculus. Springer, Berlin, 2014.
10. Atanassov, K., P. Vassilev, R. Tsvetkov, Intuitionistic Fuzzy Sets, Measures and Integrals. “Prof. M. Drinov” Academic Publishing House, Sofia, 2013.
11. Roeva, O., T. Pencheva, A. Shannon, K. Atanassov. Generalized Nets in Artificial Intelligence. Volume 7: Generalized Nets and Genetic Algorithms, “Prof. M. Drinov” Academic Publishing House, Sofia, 2013.
12. Sotirov, S., K. Atanassov, Generalized Nets in Artificial Intelligence. Volume 6: Generalized Nets and Supervised Neural Networks, “Prof. M. Drinov” Academic Publishing House, Sofia, 2013.
13. Atanassov, K. On Intuitionistic Fuzzy Sets Theory, Springer, Berlin, 2012.
14. Atanassov, K. Game Method for Modelling,”Prof. M. Drinov” Academic Publishing House, Sofia, 2011.
15. Fidanova, S., K. Atanassov, P. Marinov. Generalized Nets in Artificial Intelligence. Vol. 5: Generalized nets and Ant Colony Optimization. “Prof. M. Drinov” Academic Publishing House, Sofia, 2011.
16. Krawczak, M., S. Sotirov, K. Atanassov, Multilayer Neural Networks and Generalized Nets. Warsaw School of Information Technology, Warsaw, 2010.
17. Atanassov, K., V. Chakarov, A. Shannon, J. Sorsich, Generalized Net Models of the Human Body. “Prof. M. Drinov” Academic Publishing House, Sofia, 2008.
18. Chountas, P., B. Kolev, E. Rogova, V. Tasseva, K. Atanassov, Generalized Nets in Artificial Intelligence. Vol. 4: Generalized nets, Uncertain Data and Knowledge Engineering. “Prof. M. Drinov” Academic Publishing House, Sofia, 2007.
19. Atanassov, K. On Generalized Nets Theory. Prof. M. Drinov Academic Publ. House, Sofia, 2007.
20. Shannon, A., K.  Atanassov, D. Orozova, M. Krawczak, E. Sotirova, P. Melo-Pinto, I.  Petrounias, T. Kim. Generalized nets and information flow within a university. Warsaw School of Information Technology, Warsaw, 2007.
21. Atanassov, K., G. Gluhchev, S. Hadjitodorov, J. Kacprzyk, A. Shannon, E. Szmidt, V. Vassilev. Generalized Nets Decision Making and Pattern Recognition. Warsaw School of Information Technology, Warszawa, 2006.
22. Kolev, B., E. El-Darzi, E. Sotirova, I. Petronias, K. Atanassov, P. Chountas, V. Kodogiannis. Generalized Nets in Artificial Intelligence. Vol. 3: Generalized nets, Relational Data Bases and Expert Systems. “Prof. M. Drinov” Academic Publishing House, Sofia, 2006.
23. Shannon, A., D. Langova-Orozova, E. Sotirova, I. Petrounias, K. Atanassov, M. Krawczak, P. Melo-Pinto, T. Kim. Generalized Net Modelling of University Processes. KvB Visual Concepts Pty Ltd, Monograph No. 7, Sydney, 2005.
24. Vassilev-Missana, M., K. Atanassov, Some Smarandache Problems, Hexis, Phoenix, 2004.
25. Shannon A., O. Roeva, T. Pencheva, K. Atanassov. Generalized Nets Modelling of
    Biotechnological Processes. “Prof. M. Drinov” Academic Publishing House, Sofia, 2004.
26. Atanassov, K., G. Gluhchev, S. Hadjitodorov, A. Shannon, V. Vassilev. Generalized Nets and Pattern Recognition. KvB Visual Concepts Pty Ltd, Monograph No. 6, Sydney, 2003.
27. Atanassov K., V. Atanassova, A. Shannon, J. Turner, New Visual Perspectives on Fibonacci Numbers. World Scientific, New Jersey, 2002.
28. Sorsich J., A. Shannon, K. Atanassov. Generalized Net in Child Neurology. “Prof. M. Drinov” Academic Publishing House, Sofia, 2002.
29. Atanassov, K., H. Aladjov. Generalized Nets in Artificial Intelligence. Vol. 2: Generalized nets and Machine Learning. “Prof. M. Drinov” Academic Publishing House, Sofia, 2001.
30. Shannon, A., J. Sorsich, K. Atanassov, V. Radeva. Generalized Net Interpretations of Ivan Dimirtov’s Informational Theory of Diseases. “Prof. M. Drinov” Academic Publishing House, Sofia, 2001.
31. Atanassov, K., A. Shannon, C. Wong. Generalized Nets and Cognitive Science. KvB Visual Concepts Pty Ltd, Monograph No. 2, Sydney, 2000.
32. Shannon, A., J. Sorsich, K. Atanassov, N. Nikolov, P. Georgiev. Generalized Nets in General and Internal Medicine, Vol. 3. “Prof. M. Drinov” Academic Publishing House, Sofia, 2000.
33. Atanassov, K. Intuitionistic Fuzzy Sets. Springer Physica-Verlag, Heidelberg, 1999.
34. Atanassov, K. On Some of the Smarandache’s Problems. American Research Press, Lupton, 1999.
35. Shannon, A., J. Sorsich, K. Atanassov, N. Nikolov, P. Georgiev. Generalized Nets in General and Internal Medicine, Vol. 2. “Prof. M. Drinov” Academic Publishing House, Sofia, 1999.
36. Atanassov, K. Generalized Nets in Artificial Intelligence. Vol. 1: Generalized nets and Expert Systems. “Prof. M. Drinov” Academic Publishing House, Sofia, 1998.
37. Shannon, A., J. Sorsich, K. Atanassov, N. Nikolov, P. Georgiev. Generalized Nets in General and Internal Medicine, Vol. 1. “Prof. M. Drinov” Academic Publishing House, Sofia, 1998.
38. Atanassov, K. Generalized Nets and Systems Theory. “Prof. M. Drinov” Academic Publishing House, Sofia, 1997.
39. Atanassov, K., M. Daskalov, P. Georgiev, S. Kim, Y. Kim, N. Nikolov, A. Shannon, J. Sorsich. Generalized Nets in Neurology. “Prof. M. Drinov” Academic Publishing House, Sofia, 1997.
40. Shannon, A., J. Sorsich, K. Atanassov. Generalized Nets in Medicine. “Prof. M. Drinov” Academic Publishing House, Sofia, 1996.
41. Атанасов, К. Въведение в теорията на обобщените мрежи. Понтика Принт, Бургас, 1992.
42. Atanassov, K. Generalized Nets. World Scientific, Singapore, 1991.

1. Атанасов, К., В. Бурева, Кратък курс по дискретни структури. София, Авангард Прима, 2018.
2. Атанасов, К., Е. Сотирова, Обобщени мрежи. Академично издателство „Проф. М.
   Дринов”, София, 2017.
3. Атанасов, К. Кратък курс по математически основи на информатиката. Издателство ВУМК, Добрич, 2009.

1. K. Atanassov, V. Atanassova et al. (Eds.), Uncertainty and imprecision in Decision Making and Decision Support Springer, Cham, 2022.
2. T. Tagarev, K. Atanassov, et al. (Eds.), Digital Transformation, Cyber Security and Resilience of Modern Societies. Springer, Cham, 2021.
3. K. Atanassov, V. Atanassova, et al. (Eds.), Advances and New Developments in Fuzzy Logic and Technology. Springer, Cham, 2021.
4. K. Atanassov, V. Atanassova et al. (Eds.), Uncertainty and Imprecision in Decision Making and Decision Support. Springer, Cham, 2021.
5. K. Atanassov (Ed.) Research in Computer Science in Bulgarian Academy of Sciences, Springer, Cham, 2020.
6. Hadjiski, M., K. Atanassov (Eds.): Intuitionistic Fuzziness and Other Intelligent Theories and Their Applications. Springer, Cham, 2019.
7. Atanassov K, J. Kacprzyk, A. Kałuszko, M. Krawczak, J. Owsiński, S. Sotirov, E. Sotirova, E. Szmidt, S. Zadrożny (Eds.): Uncertainty and Imprecision in Decision Making and Decision Support: Cross-Fertilization, New Models, and Applications. Springer, Cham, 2018.
8. V. Sgurev, R. Yager, J. Kacprzyk, K. Atanassov (Eds.), Recent Contributions in Intelligent Systems. Springer, Cham, 2017.
9. Atanassov K., Castillo O., Kacprzyk J., Krawczak M., Melin P., Sotirov S., Sotirova E., Szmidt E., De Tre G., Zadrożny S. (Eds.): Novel Developments in Uncertainty Representation and Processing. Advances in Intuitionistic Fuzzy Sets and Generalized Nets – Proceedings of 14th International Conference on Intuitionistic Fuzzy Sets and Generalized Nets. Springer, Heidelberg and New York 2016.
10. Atanassov K., Kacprzyk J., Krawczak M., Szmidt E. (Eds.): Issues in Intuitionistic Fuzzy Sets and Generalized Nets,Volume 11. Instytut Badań Systemowych PAN, Warszawa 2014.
11. Angelov P., Atanassov K., Doukovska L., Hadjiski M., Jotsov V., Kacprzyk J., Kasabov N., Sotirov S., Szmidt E., Zadrożny S. (Eds.): Intelligent Systems’2014, Vol.1; Mathematical Foundations, Theory, Analyses. Springer-Verlag, Heidelberg 2015.
12. Atanassov K., Homenda W., Hryniewicz O., Kacprzyk J., Krawczak M., Nahorski Z., Szmidt E., Zadrożny S. (Eds.): Modern Approaches in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Vol. II: Applications. IBS PAN, Warszawa 2014.
13. Atanassov K., Baczyński M., Drewniak J., Kacprzyk J., Krawczak M., Szmidt E., Wygralak M., Zadrożny S. (Eds.): Modern Approaches in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Vol. I: Foundationpp. Instytut Badan Systemowych IBS PAN, 2014.
14. Atanassov K., Kacprzyk J., Krawczak M., Szmidt E. (Eds.): Issues in intuitionistic fuzzy sets and generalized nets. Wyższa Szkoła Informatyki Stosowanej i Zarządzania, Warszawa 2013.
15. Atanassov K., Homenda W., Hryniewicz O., Kacprzyk J., Krawczak M., Nahorski Z., Szmidt E., Zadrożny S. (Eds.): New trends in fuzzy sets, intuitionistic fuzzy sets, generalized nets and related topics. Vol. II: applications. Instytut Badań Systemowych PAN, Warszawa 2013.
16. Atanassov K., Baczyński M., Drewniak J., Kacprzyk J., Krawczak M., Szmidt E., Wygralak M., Zadrożny S. (Eds.): New trends in fuzzy sets, intuitionistic fuzzy sets, generalized nets and related topics. Vol. I: foundations. Instytut Badań Systemowych PAN, Warszawa 2013.
17. Atanassov K., Homenda W., Hryniewicz O., Kacprzyk J., Krawczak M., Nahorski Z., Szmidt E., Zadrożny S. (Eds.): New developments in fuzzy sets, intuitionistic fuzzy sets, generalized nets and related topics. Vol II: Applications. Systems Research Institute, Polish Academy of Sciences, Warszawa, 2012.
18. Atanassov K., Baczyński M., Drewniak J., Kacprzyk J., Krawczak M., Szmidt E., Wygralak M., Zadrożny S. (Eds.): New Developments in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Volume I: Foundations. Systems Research Institute Polish Academy of Sciences, Warszawa, 2012.
19. Atanassov K., Kacprzyk J., Krawczak M., Szmidt E. (Eds.): Issues in intuitionistic fuzzy sets and Generalized nets, Volume 9. Wyższa Szkoła Informatyki Stosowanej i Zarządzania, Warszawa, 2011.
20. Atanassov K., Homenda W., Hryniewicz O., Kacprzyk J., Krawczak M., Nahorski Z., Szmidt E., Zadrożny S. (Eds.): Recent Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Vol II: Applications. Systems Research Institute, Polish Academy of Sciences, Warszawa 2011.
21. Atanassov K., Baczyński M., Drewniak J., Kacprzyk J., Krawczak M., Szmidt E., Wygralak M., Zadrożny S. (Eds.): Recent Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Volume I: Foundations. Instytut Badan Systemowych PAN, Warszawa 2011.
22. Atanassov K., Hryniewicz O., Kacprzyk J., Krawczak M., Nahorski Z., Szmidt E., Zadrożny S. (Eds.): Advances in Fuzzy sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Volume II: Applications. EXIT, Warsaw 2008.
23. Atanassov K., Hryniewicz O., Kacprzyk J., Krawczak M., Nahorski Z., Szmidt E., Zadrożny S. (Eds.): Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Volume I: Foundations. EXIT, Warsaw 2008.
24. Atanassov K., Kacprzyk J., Krawczak M., Szmidt E. (Red.): Issues in Intuitionistic Fuzzy Sets and Generalized Nets. WIT, Warsaw 2008.
25. Atanassov, K., J. Kacprzyk, M. Krawczak, E. Szmidt E. (Eds.): Issues in Intuitionistic Fuzzy Sets and Generalized Nets . Vol. 3. WIT – Wyższa Szkoła Informatyki Stosowanej i Zarządzania, Warsaw 2006.
26. Kacprzyk, J., Krawczak M., Szmidt E., Atanassov K. (Eds.): Issues in the Representation and Processing of Uncertain and Imprecise Information. Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets, and Related Topics. EXIT, Warsaw, 2005.
27. Kacprzyk, J.,Krawczak M., Atanassov K. (Eds.): Issues in Intuitionistic Fuzzy Sets and Generalized Nets. Vol. 2. WIT – Wyższa Szkoła Informatyki Stosowanej i Zarządzania, Warsaw, 2005.
28. Atanassov K., Hryniewicz O., Kacprzyk J. (Eds.): Soft Computing. Foundations and Theoretical aspects. Akademicka Oficyna Wydawnicza EXIT, Warsaw, 2004.
29. Atanassov, K., J. Kacprzyk, M. Krawczak M. (Eds.): Issues in Intuitionistic Fuzzy Sets and Generalized Nets . Volume 2. WIT – Warsaw School of Information Technology (Wyższa Szkoła Informatyki Stosowanej i Zarządzania), Warsaw, 2004.
30. Atanassov, K., J. Kacprzyk, M. Krawczak (Eds.): Issues in Intuitionistic Fuzzy Sets and Generalized Nets. Volume 1. WIT – Warsaw School of Information Technology (Wyższa Szkoła Informatyki Stosowanej i Zarządzania), Warsaw, 2004.
31. Atanassov K., O. Hryniewicz, J. Kacprzyk J. (Eds.): Soft computing. Foundations and Theoretical Aspects. Akademicka Oficyna Wydawnicza EXIT, Warsaw, 2004.
32. Atanassov K. (Ed.) Applications of Generalized Nets. World Scientific, Singapore, 1993.

2023

1. Atanassov, K. On Intuitionistic Fuzzy Temporal Topological Structures. Axioms 2023, 12, 182. https://doi.org/10.3390/axioms12020182
2. Atanassov, K., S. Sotirov, T. Pencheva. Intuitionistic Fuzzy Deep Neural Network. Mathematics, 2023, 11, 716. https://doi.org/10.3390/math11030716
3. Stratiev, D., R. Dinkov, M. Tavlieva, I. Shishkova, G. Palichev, S. Ribagin, K. Atanassov, D.D. Stratiev, S. Nenov, D. Pilev, S. Sotirov, E. Sotirova, S. Simeonov, V. Boyadzhieva. Correlations of HTSD to TBP and Bulk Properties to Saturate Content of a Wide Variety of Crude Oils. Processes 2023, 11, 420. https://doi.org/10.3390/pr11020420
4. Stratiev, D., S. Sotirov, E. Sotirova, S. Nenov, R. Dinkov, I. Shishkova, I. Kolev, D. Yordanov, S. Vasilev, K. Atanassov, S. Simeonov, G. Palichev. Prediction of Molecular Weight of Petroleum Fluids by Empirical Correlations and Artificial Neuron Networks. Processes 2023, 11, 426. https://doi.org/10.3390/pr11020426
5. Atanassov, K. On four intuitionistic fuzzy feeble topological structures. 2022 IEEE 11th International Conference on Intelligent Systems (IS), Warsaw, 12-14 Oct. 2022 IEEE | DOI: 10.1109/IS57118.2022.10019726
6. Boyukov, T., V. Andonov, K. Atanassov. Generalized net model of the connections between different types of transport in Bulgaria. 2022 IEEE 11th International Conference on Intelligent Systems (IS) | 978-1-6654-5656-2/22/; DOI: 10.1109/IS57118.2022.10019720
7. Ribagin, S., K. Atanassov, I. Hristozov. Generalized net model of the DOBOT Magician robot functionalities. 022 IEEE 11th International Conference on Intelligent Systems (IS) | 978-1-6654-5656-2/22; DOI: 10.1109/IS57118.2022.1001969

2022

1. Atanassov, K. Intuitionistic Fuzzy Modal Topological Structure. Mathematics 2022, 10, 3313. https://doi.org/10.3390/ math10183313
2. Poryazov, S. V. Andonov, E. Saranova, K. Atanassov. Two Approaches to the Traffic Quality Intuitionistic Fuzzy Estimation of Service Compositions. Mathematics, 2022, 10, 4439. https://doi.org/10.3390/math10234439
3. Stratiev, D., Shishkova, I., Palichev, G.N., Atanassov, K., Ribagin, S. Nenov, S., Nedanovski, D.; Ivanov, V. Study of Bulk Properties Relations to SARA Composition Data of Various Vacuum Residues Employing Intercriteria Analysis. Energies 2022, 15, 9042. https://doi.org/10.3390/en15239042
4. Shishkova, I., D. Stratiev, I. Kolev, S. Nenov, D. Nedanovski, K. Atanassov, V. Ivanov, S. Ribagin. Challenges in Petroleum Characterization—A Review. Energies, 2022, 15, 7765. https://doi.org/10.3390/en15207765
5. Atanassov, K. T. (2022). New Topological Operator over IntuitionisticFuzzy Sets. Journal of Computational and Cognitive Engineering1(3), 94–102,https://doi.org/10.47852/bonviewJCCE2202197
6. Stratiev, D., I. Shishkova, R. Dinkov, I.Kolev, G. Argirov, V. Ivanov, S. Ribagin, V. Atanassova, K. Atanassov, D. Stratiev, S. Nenov, D. Pilev. Intercriteria Analysis to Diagnose the Reasons for Increased Fouling in a Commercial Ebullated Bed Vacuum Residue Hydrocracker. ACS Omega, 7, 34, American Chemical Society, 2022, ISSN:24701343, DOI:10.1021/acsomega.2c03876, 30462-30476.
7. Lubich, M., A. Shannon, Ch. Slavov, T. Pencheva, S. Ribagin, K. Atanassov. A generalized net model of the pattern of bechaviour in patient with eGFR < 20 mL/min (CDK Stage IV-V). In:- Contemporary Methods in Bioinformatics and Biomedicine and their Applications (S. Sotirov, T. Pencheva, J. Kacprzyk, K. Atanassov, E. Sotirova, G. Staneva, Eds.), Springer,Cham, 2022, 113-120.
8. Andreev, N., S. Ribagin, K, Atanassov. A generalized net model of the process of obtaining and diagnosing convalescent plasma from patients with COVID-19. ). In:- Contemporary Methods in Bioinformatics and Biomedicine and their Applications (S. Sotirov, T. Pencheva, J. Kacprzyk, K. Atanassov, E. Sotirova, G. Staneva, Eds.), Springer,Cham, 2022, 131-138.
9. Vasilev, V., K. Atanassov, E. Sotirova. Generalized net model of the upper limb arterial supply system. In:- Contemporary Methods in Bioinformatics and Biomedicine and their Applications (S. Sotirov, T. Pencheva, J. Kacprzyk, K. Atanassov, E. Sotirova, G. Staneva, Eds.), Springer,Cham, 2022, 145-153.
10. Churukova, E., O. Roeva, K. Atanassov. Generalized net model of ant lion optimization. . In:- Contemporary Methods in Bioinformatics and Biomedicine and their Applications (S. Sotirov, T. Pencheva, J. Kacprzyk, K. Atanassov, E. Sotirova, G. Staneva, Eds.), Springer,Cham, 2022, 154-162.
11. Atanassov, K. On new intuitionistic fuzzy (ε, η)-negation and (ε, η)-implication. Journal of Universal Mathematics, Vol. 5, No. 2, 51-60 (2022) ISSN-2618-5660 DOI: 10.33773/jum.1134441
12. Jereva, D., P. Alov, I. Tsakovska, M. Angelova, V. Atanassova, P. Vassilev, N. Ikonomov, K. Atanassov, I. Pajeva, T. Pencheva. Application of InterCriteria Analysis to Assess the Performance of Scoring Functions in Molecular Docking Software Packages. Mathematics 2022, 10, 2549. https://doi.org/10.3390/math10152549
13. Boyukov, T., K. Atanassov. Generalized nets as a tool for modelling of railway networks. Part 3. Proceedings of the Jangjeon Mathematical Society, Vol. 25 (2022), No. 3, 359 – 364.
14. Angelova, N., K. Atanassov, V. Atanassova. Research on intuitionistic fuzzy implications. Part 2. Notes on Intuitionistic Fuzzy Sets, Volume 28 (2022), No. 2, 172–192.
15. Atanassov, K., V. Bureva. Index matrix representation of Big Data structures. Comptes rendus de l’Acad´emie bulgare des Sciences, Tome 75, No 5, 2022, 719-725.
16. Lubich, M., V. Papazov, E. Popov, R. Georgieva, D. Dmitrenko, B. Bojkov, Ch. Slavov, P. Vassilev, V. Atanassova, L. Todorova, K. Atanassov. A Generalized Net Model of the Prostate Gland’s Functioning. Mathematics 2022, 10, 479. https://doi.org/10.3390/ math10030479
17. Atanassov, K. Extended Temporal-level Operator Over Intuitionistic Fuzzy Sets. J. of Multi-Valued Logic & Soft Computing, Vol. 39, 2022, 385–399.
18. Mavrov, D., V. Atanassova, V. Bureva, O. Roeva, P. Vassilev, R. Tsvetkov, D. Zoteva, E. Sotirova, K. Atanassov, A. Alexandrov, H. Tsakov. Application of Game Method for Modelling and Temporal Intuitionistic Fuzzy Pairs to the Forest Fire Spread in the Presence of Strong Wind. Mathematics 2022, 10, 1280. https://doi.org/10.3390/ math10081280
19. Atanassov K, G. Staneva,T. Pencheva. Generalized Net Model of the Foreign Object Principle and its Network Physiology Interpretations. Frontiers Network Physiology, 2022, 2:873337. doi: 10.3389/fnetp.2022.873337
20. Atanassov, K., E. Marinov, P. Vassilev. An interval-valued intuitionistic fuzzy estimation of the area of 2D-figure based on Pick’s formula. In:- Uncertainty and Imprecision in Decision Making and Decision Support: New Advances, Challenges, and Perspectives (K. Atanassov, V. Atanassova, J. Kacprzyk, et al., Eds.), Springer, Cham, 2022, 85-91.
21. Boyukov, T., K. Atanassov. Generalized nets as a tool for modelling of railway networks. Part 2. In:- Uncertainty and Imprecision in Decision Making and Decision Support: New Advances, Challenges, and Perspectives (K. Atanassov, V. Atanassova, J. Kacprzyk, et al., Eds.), Springer, Cham, 2022, 120-128.
22. Bureva, V., E. Sotirova, P. Vassilev, V. Atanassova, O. Roeva, K. Atanassov, H. Tsakov. Application of Game Method for Modelling tо Locate a Forest Fire Ignition Point in the Presence of Wind. In:- Uncertainty and Imprecision in Decision Making and Decision Support: New Advances, Challenges, and Perspectives (K. Atanassov, V. Atanassova, J. Kacprzyk, et al., Eds.), Springer, Cham, 2022, 281-293.
23. Ikonomov, N., P. Marinov, P. Vassilev, O. Roeva, D. Zoteva, V. Atanassova, K. Atanassov. 3D Software Implementation of the Game for Method for Modelling Forest Fires in MyGL Software Tool. In:- Uncertainty and Imprecision in Decision Making and Decision Support: New Advances, Challenges, and Perspectives (K. Atanassov, V. Atanassova, J. Kacprzyk, et al., Eds.), Springer, Cham, 2022, 327-337.
24. Stratiev, D., D. Zoteva, D.D. Stratiev, K. Atanassov. Modelling the process of production of automotive gasoline by the use of Generalized Nets. . In:- Uncertainty and Imprecision in Decision Making and Decision Support: New Advances, Challenges, and Perspectives (K. Atanassov, V. Atanassova, J. Kacprzyk, et al., Eds.), Springer, Cham, 2022, 349-365.
25. Vassilev, V., E. Sotirova, K. Atanassov. A generalized net model of the normal heart functioning. . In:- Uncertainty and Imprecision in Decision Making and Decision Support: New Advances, Challenges, and Perspectives (K. Atanassov, V. Atanassova, J. Kacprzyk, et al., Eds.), Springer, Cham, 2022, 408-418.
26. Atanassov, K. On the Temporal Intuitionistic Fuzzy Sets. Proceedings of the Intelligent and Fuzzy Systems, Digital Acceleration and The New Normal Conference, 2022, Istanbul, (Cengiz Kahraman et al., Eds.), Volume 1, In:- Lecture Notes in Networks and Systems, Vol. 504, 519-528.
27. Ribagin, S., S. Sotirov, E. Sotirova, I. Hristozov, K. Atanassov. Intuitionistic Fuzzy Generalized Net Model of the Humanoid Service Robot Functionalities. Digital Acceleration and The New Normal Conference, 2022, Istanbul, (Cengiz Kahraman et al., Eds.), Volume 1, In:- Lecture Notes in Networks and Systems, Vol. 504, 529-536.
28. Stratiev, S., S. Nenov, D. Nedanovski, I. Shishkova, R. Dinkov, Da. D. Stratiev, De. D. Stratiev, S. Sotirov, E. Sotirova, V. Atanassova, S. Ribagin, K. Atanassov, D. Yordanov, N. Angelova, L. Todorova-Yankova. Empirical Modeling of Viscosities and Softening Points of Straight-Run Vacuum Residues from Different Origins and of Hydrocracked Unconverted Vacuum Residues Obtained in Different Conversions. Energies 2022, 15, 1755. https://doi.org/10.3390/en15051755
29. Atanassov, K., n-dimensional extended index matrices. Advanced Studies in Contemporary Mathematics, Vol. 32 (2022), No. 1, 85 – 101; http://dx.doi.org/10.17777/ascm2022.32.1.85
30. Atanassov, K., Cartesian products over extended index matrices. Advanced Studies in Contemporary Mathematics, Vol. 32 (2022), No. 1, 45-51;http://dx.doi.org/10.17777/ascm2022.32.1.45

2021

1. Atanassov, K. Intuitionistic fuzzy temporal-modal operators. Advances and new Developments in Fuzzy Logic and technology (K. Atanassov, V. Atanassova, J. kacprzyk, et al., Eds.), Springer, Cham, 2021, 3-15.
2. Atanassov, K., V. Vasilev, V. Andonov, E. Sotirova. A generalized net model of the abdominal aorta and its branches as a part of the vascular system. Advances and new Developments in Fuzzy Logic and technology (K. Atanassov, V. Atanassova, J. kacprzyk, et al., Eds.), Springer, Cham, 2021, 175-185.
3. Lubich, M., V. Andonov, A. Shannon, C. Slavov, T. Pencheva, K. Atanassov. A generalized net model of the human body excretory system. Advances and new Developments in Fuzzy Logic and technology (K. Atanassov, V. Atanassova, J. kacprzyk, et al., Eds.), Springer, Cham, 2021, 186-192.
4. Боюков, Т., К. Атанасов. Обобщеномрежов модел на железопътната мрежа на България. Годишник на секция „Информатика“ СМБ, Том 11, 2021, 24-46.
5. Atanassov, K. Intuitionistic Fuzziness, Standard and Extended Modality. In:- Advances in Intelligent Systems Research and Innovation (V. Sgurev et al., Eds.), Studies in Systems, Decision and Control, Vol. 379, 269-285; https://doi.org/10.1007/978-3-030-78124-8_12
6. Atanassov, K., A. Shannon, E. Sotirova, V.Vasilev, S. Sotirov. Generalized Net Model for Collecting, Evaluating and Including of Facts in the Educational Content. In:- Advances in Intelligent Systems Research and Innovation (V. Sgurev et al., Eds.), Studies in Systems, Decision and Control, Vol. 379, 341-348; https://doi.org/10.1007/978-3-030-78124-8_15
7. Atanassov, K., P. Vassilev, V. Atanassova, O. Roeva, R. Iliev, D. Zoteva, V. Bureva, D. Mavrov, A. Alexandrov. Generalized Net Model of Forest Zone Monitoring by UAVs. Mathematics 2021, 9, 2874. https://doi.org/10.3390/math9222874
8. D. S. Stratiev, I. Shishkova, I. Petrov, R. Dinkov, V. Atanassova, S. Ribagin, D. D. Stratiev, K. Atanassov, About H-Oil performance improvement and cetane number of finished refinery diesel, Oil Gas European Magazine, 47, Issue 3, 2021,13-16.
9. Stratiev, D.D., D. Stratiev, K. Atanassov. Modelling the Process of Production of Diesel Fuels by the Use of Generalized Nets. Mathematics 2021, 9, 2351. https://doi.org/10.3390/math9192351
10. Stratiev, D., S. Nenov, Nedanovski, I. Shishkova, R. Dinkov, D. D. Stratiev, D. D. Stratiev, S. Sotirov, E. Sotirova, V. Atanassova, K. Atanassov, D. Yordanov, N. Angelova, S. Ribagin, L. Todorova-Yankova. Different Nonlinear Regression Techniques and Sensitivity Analysis as Tools to Optimize Oil Viscosity Modeling. Resources 2021, 10, 99. https://doi.org/10.3390/resources10100099
11. Atanassov, K. Elliptic intuitionistic fuzzy sets. Comptes rendus de l’Académie bulgare des Sciences, Tome 74, No 6, 2021, 812-819.
12. Stratiev, D.D., D. Stratiev, K. Atanassov. Modelling the Process of Production of Diesel Fuels by the Use of Generalized Nets. Mathematics 2021, 9, 2351. https://doi.org/10.3390/math9192351
13. Pencheva, T., M. Angelova, E. Sotirova, K. Atanassov. How to Assess Different Algorithms Using Intuitionistic Fuzzy Logic. Mathematics 2021, 9, 2189. https://doi.org/10.3390/math9182189
14. Stratiev, D., S. Nenov, I. Shishkova, R. Dinkov, K. Zlatanov, D. Yordanov, S. Sotirov, E. Sotirova, V. Atanassova, K. Atanassov, D. Stratiev, L. Todorova‐Yankova. Comparison of Empirical Models to Predict Viscosity of Secondary Vacuum Gas Oils. Resources Vol. 10, No. 82, 2021,https://doi.org/10.3390/resources10080082
15. Stratiev, D., I. Shishkova, R. Dinkov, I. Petrov, I. Kolev, D. Yordanov, S. Sotirov, E. Sotirova, S. Ribagin, K. Atanassov, Empirical Models to Characterize the Structural and Physiochemical Properties of Vacuum Gas Oils with Different Saturate Contents. Resources 2021, 10, 71. https://doi.org/10.3390/ resources10070071.
16. Stratiev, D., S. Nenov, I. Shishkova, G Argirov, B. Georgiev, D. Yordanov, V. Atanassova, K. Atanassov, V. Toteva, Non-linear least-squares methods for modelling vacuum residue hydrocracking, Oxidation Communications 44, No 2, 483–494 (2021).
17. Shishkova, I.K.; Stratiev, D.S.; Tavlieva, M.P.; Dinkov, R.K.; Yordanov, D.; Sotirov, S.; Sotirova, E.; Ribagin, S.; Atanassov, K.; Stratiev, D.D.; et al. Evaluation of the Different Compatibility Indices to Model and Predict Oil Colloidal Stability and Its Relation to Crude Oil Desalting. Resources 2021, 10, x. https://doi.org/10.3390/xxxxx
18. Shishkova, I., D. Stratiev, M. Tavlieva, R. Dinkov, D. Yordanov, S. Sotirov, E. Sotirova, V. Atanassova, S. Ribagin, K. Atanassov, D. Stratiev, L.Todorova-Yankova, S. Nenov. Evaluation of the Different Compatibility Indices to Model and Predict Oil Colloidal Stability and Its Relation to Crude Oil Desalting. Resources 2021, 10, 75. https://doi.org/10.3390/resources10080075
19. Atanassov, K. Third Zadeh’s Intuitionistic Fuzzy Implication. Mathematics 2021, 9, 619. https://doi.org/10.3390/math9060619
20. Atanassov, K., E. Marinov. Four Distances for Circular Intuitionistic Fuzzy Sets. Mathematics, 2021, 9(10), 1121; https://doi.org/10.3390/math9101121 – 15 May 2021
21. Atanassov, K., N. Angelova, V. Atanassova. On an Intuitionistic Fuzzy Form of the Goguen’s Implication. Mathematics 2021, 9, 676. https://doi.org/10.3390/math9060676
22. Stratiev, D., I. Shishkova, R. Dinkov, I. Petrov, I. Kolev, D. Yordanov, S. Sotirov, E.Sotirova, V. Atanassova, S. Ribagin, K. Atanassov, D. Stratiev, S. Nenov. Crude Slate, FCC Slurry Oil, Recycle, and Operating Conditions Effects on H-Oil® Product Quality. Processes, Vol. 9, 2021, 952; https://doi.org/10.3390/pr9060952; https://www.mdpi.com/journal/processes
23. Zoteva, D., P. Vassilev, L. Todorova, K. Atanassov, L. Doukovska, V. Tzanov. Generalized Net Model of Cyber-Control of the Firm’s Dumpers and Crushers. In:- Digital Transformation, Cyber Security and Resilience of Modern Societies (T. Tagarev,• K. Atanassov, V. Kharchenko, J. Kacprzyk, Eds), Springer, Cham, 2021, 245-253.
24. Stratiev, D., I. Shishkova, M. Ivanov, R. Dinkov, B. Georgiev, G. Argirov, V. Atanassova, P. Vassilev, K. Atanassov, D. Yordanov, A. Popov, A. Padovani, U. Hartmann, S. Nenov. Catalytic Cracking of Diverse Vacuum Residue Hydrocracking Gas Oils. Chem. Eng. Technol. 2021, 44, No. 6, 1–13; DOI: 10.1002/ceat.202000577
25. Stratiev,S., I. Shishkova, M. Ivanov, R. Dinkov, B. Georgiev, G. Argirov, V. Atanassova, P. Vassilev, K. Atanassov, D. Yordanov, A. Popov, A. Padovani, U. Hartmann, S. Brandt, S. Nenov, S. Sotirov, E. Sotirova, Role of Catalyst in Optimizing Fluid Catalytic Cracking Performance During Cracking of H‑Oil-Derived Gas Oils, ACS Omega, 2021, https://dx.doi.org/10.1021/acsomega.0c06207
26. Stratiev, D., I. Shishkova, M. Ivanov, R. Dinkov, B. Georgiev, G. Argirov, V. Atanassova, P. Vassilev, K. Atanassov, D. Yordanov, A. Popov, A. Padovani, U. Hartmann, S. Nenov, Chem. Eng. Technol. 2021, 44, No. 6, 1–13, DOI: 10.1002/ceat.202000577
27. Atanassov, K. Extended Interval Valued Intuitionistic Fuzzy Index Matrices. In :- Uncertainty and Imprecision in Decision Making and Decision Support: New Challenges, Solutions and Perspectives (K. Atanassov, V. Atanassova, J. Kacprzyk, et al., Eds.), Springer, Cham, 2021, 3-12.
28. Vassilev, P., K. Atanassov. A Note on Intuitionistic Fuzzy Sets, Interval Valued Intuitionistic Fuzzy Sets and Picture Fuzzy Sets. In :- Uncertainty and Imprecision in Decision Making and Decision Support: New Challenges, Solutions and Perspectives (K. Atanassov, V. Atanassova, J. Kacprzyk, et al., Eds.), Springer, Cham, 2021, 24-28.
29. Andreev, N., T. Pencheva, S. Ribagin, K. Atanassov. Generalized Net Model of Blood Donation Processes. . In :- Uncertainty and Imprecision in Decision Making and Decision Support: New Challenges, Solutions and Perspectives (K. Atanassov, V. Atanassova, J. Kacprzyk, et al., Eds.), Springer, Cham, 2021, 147-154.
30. Sonkin, M.A., A. A. Khamukhin, A. V. Pogrebnoy, P. Marinov, V. Atanassova, O. Roeva, K. Atanassov, A. Alexandrov. Intercriteria Analysis as Tool for Acoustic Monitoring of Forest for Early Detection Fires. In :- Uncertainty and Imprecision in Decision Making and Decision Support: New Challenges, Solutions and Perspectives (K. Atanassov, V. Atanassova, J. Kacprzyk, et al., Eds.), Springer, Cham, 2021, 205-213.
31. Atanassova, L., K. Atanassov, N. Angelova. Short Remark on 3-Dimensional Game Method for Modelling. . In :- Uncertainty and Imprecision in Decision Making and Decision Support: New Challenges, Solutions and Perspectives (K. Atanassov, V. Atanassova, J. Kacprzyk, et al., Eds.), Springer, Cham, 2021, 379-386.
32. Atanassov, K., V. Bureva. Four opertions over extended intuitionistic fuzzy index matrices and some of their applications. Advances in High Performance Computing (I. Dimiov, S. Fidanova, Eds.), S., C., 2021, 27-39.
33. Tsakovska, I., P. Alov, N. Ikonomov, V. Atanassova, P. Vassilev, O. Roeva, D. Jereva, K. Atanassov, I. Pajeva, T. Pencheva. Intercriteria analysis implementation for exploration of the performance of various docking scoring functions. Advances in High Performance Computing (I. Dimiov, S. Fidanova, Eds.), S., C., 2021, 88-98.
34. Atanassov, K., P. Vassilev, O. Roeva. Level Operators over Intuitionistic Fuzzy Index Matrices. Mathematics 2021, 9, 366. https://doi.org/10.3390/math9040366
35. Atanassov, K., N. Angelova. Modifications of the Third Zadeh’s intuitionistic fuzzy implication. Notes on Intuitionistic Fuzzy Sets, Volume 27 (2021), No. 1, 9–23.
36. Angelova, A., K. Atanassov. Research on intuitionistic fuzzy implications. Notes on Intuitionistic Fuzzy Sets, Volume 27 (2021), No. 2, 20–93.
37. Atanassov, K. My meetings with Prof. Lotfi Zadeh. Notes on Intuitionistic Fuzzy Sets, Volume 27 (2021), No. 3, 1–8.
38. Angelova, A., K. Atanassov. Research on intuitionistic fuzzy negations. Notes on Intuitionistic Fuzzy Sets, Volume 27 (2021), No. 3, 18-31.
39. Kacprzyk, J., K. Čunderlíková, N. Angelova, K. Atanassov. Modifications of the Goguen’s intuitionistic fuzzy implication. Notes on Intuitionistic Fuzzy Sets, Volume 27 (2021), No. 4, 20-29.
40. Atanassov, K. A new type of intuitionistic fuzzy modal operators over intuitionistic fuzzy pairs. Notes on Intuitionistic Fuzzy Sets, Volume 27 (2021), No. 4, 30-35.
41. Sándor, J., K. Atanassov. On a Diophantine equation arising in the history of mathematics. Notes on Number Theory and Discrete Mathematics. Notes on Intuitionistic Fuzzy Sets, Volume 27 (2021), No. 1, 70-75.
42. Atanassov, K. A short remark on a new Fibonacci-type sequence. Notes on Number Theory and Discrete Mathematics, Volume 27, 2021, No. 2, 168-171.
43. Shannon, A., K. Atanassov. A short remark on an arithmetic function. Notes on Number Theory and Discrete Mathematics, Volume 27, 2021, No. 3, 12-15.
44. Atanassov, K. Formulas for the n-th prime number. Notes on Number Theory and Discrete Mathematics, Volume 27, 2021, No. 4, 129-139.

2020

1. Atanassov, K., Pencheva, T.. Cartesian products over intuitionistic fuzzy index matrices. Proceedings of the Jangjeon Mathematical Society, 23, 1, 2020, DOI:10.17777/pjms2020.23.1.65, 65-69. SJR (Scopus):0.214
2. Atanassov, K., Vassilev, P.. Intuitionistic fuzzy sets and other fuzzy sets extensions representable by them. Journal of Intelligent & Fuzzy Systems, 38, 1, 2020, DOI:10.3233/JIFS-179426, 525-530. SJR (Scopus):0.331, JCR-IF (Web of Science):1.851
3. Atanassov, K., Sotirov, S., Angelova, N.. Intuitionistic Fuzzy Neural Networks with Interval Valued Intuitionistic Fuzzy Conditions. Studies in Computational Intelligence, 862, Springer, 2020, DOI:10.1007/978-3-030-35445-9_9, 99-106. SJR (Scopus):0.185
4. Atanassov, K.. A new modal type operator over intuitionistic fuzzy sets. Comptes Rendus de l’Academie Bulgare des Sciences, 73, 8, Prof. Marin Drinov Academic Publishing House, Sofia, Bulgaria, 2020, 1043-1050. JCR-IF (Web of Science):0.343   Atanassov, K.. Circular intuitionistic fuzzy sets. Journal of Intelligent and Fuzzy Systems, 39, 5, IOS Press, 2020, DOI:10.3233/JIFS-189072, 5981-5986. SJR (Scopus):0.331, JCR-IF (Web of Science):1.851
5. Atanassov, K.. Interval Valued Intuitionistic Fuzzy Sets Past, Present and Future. Studies in Computational Intelligence, 835, Springer, 2020, ISSN:1860949X, DOI:10.1007/978-3-030-31041-7_5, 87-110. SJR (Scopus):0.185
6. Marinov, E., Atanassov, K.. Partially continuous pretopological and topological operators for intuitionistic fuzzy sets. Iranian Journal of Fuzzy Systems, 17, 2, 2020, ISSN:1735-0654, DOI:10.22111/ijfs.2019.4879, 1-15. SJR (Scopus):0.35, JCR-IF (Web of Science):2.276
7. Roeva, O., Zoteva, D., Atanassova, V., Atanassov, K., Castillo, O.. Cuckoo search and firefly algorithms in terms of generalized net theory. Soft Computing, 24, 7, 2020, DOI:10.1007/s00500-019-04241-7, 4877-4898. SJR (Scopus):0.626, JCR-IF (Web of Science):3.05
8. Stratiev, D., Nenov, S., Shishkova, I., Georgiev, B., Argirov, G., Dinkov, R., Yordanov, D., Atanassova, V., Vassilev, P., Atanassov, K.. Commercial Investigation of the Ebullated-Bed Vacuum Residue Hydrocracking in the Conversion Range of 55-93%. ACS Omega, 5, 51, American Chemical Society, 2020, DOI:10.1021/acsomega.0c05073, 33290-33304. SJR (Scopus):0.779, JCR-IF (Web of Science):2.87

2019

1. Andreev, Nikolay, Sotirova, Evdokia, Shannon, Anthony, Atanassov, Krassimir. Generalized Net Model of the Processes in a Center of Transfusion Haematology. Hadjiski M., Atanassov K. (eds) Intuitionistic Fuzziness and Other Intelligent Theories and Their Applications. Studies in Computational Intelligence, vol 757., Springer, 2019, DOI:10.1007/978-3-319-78931-6_8, 123-133. SJR (Scopus):0.215
2. Atanassov, K., Marinov, P., Atanassova, V.. InterCriteria Analysis with Interval-Valued Intuitionistic Fuzzy Evaluations. Lecture Notes in Computer Science, 11529, Springer, 2019, DOI:10.1007/978-3-030-27629-4_30, 329-338. SJR (Scopus):0.427
3. Atanassov, K.T., Atanassova, V., Chountas, P.. Intercriteria analysis and arithmetic functions. Studies in Computational Intelligence, 757, Springer, 2019, DOI:10.1007/978-3-319-78931-6_1, 1-11. SJR (Scopus):0.215
4. Atanassov, Krassimir. Brouwer’s Ideas and Intuitionistic Fuzziness. Studies in Computational Intelligence, 794, 2019, DOI:10.1007/978-3-030-01632-6_5, 65-81. SJR (Scopus):0.215
5. Atanassov, Krassimir. On two-way generalized nets. In: Georgiev K., Todorov M., Georgiev I. (eds) Advanced Computing in Industrial Mathematics. BGSIAM 2017. Studies in Computational Intelligence, 793, Springer, 2019, DOI:10.1007/978-3-319-97277-0_5, 51-62. SJR (Scopus):0.215
6. Castillo, O., Atanassov, K.. Comments on fuzzy sets, interval type-2 fuzzy sets, general type-2 fuzzy sets and intuitionistic fuzzy sets. Studies in Fuzziness and Soft Computing, 372, Springer Nature, 2019, ISSN:14349922, DOI:10.1007/978-3-030-02155-9_3, 35-43. SJR (Scopus):0.187
7. Orozova, D., Atanassov, K.. Model of Big Data Map/Reduce processing. Comptes rendus de l’Acad´emie bulgare des Sciences, 72, 11, 2019, DOI:10.7546/CRABS.2019.11.11, 1537-1545. JCR-IF (Web of Science):0.321
8. Sotirova, E., Kacprzyk, J., Atanassov, K., Szmidt, E.. A Generalized Net Model for the Coordination and Synchronization of Human and Computer-Based Expert Type Decision Support Activities. Studies in Computational Intelligence, 794, 2019, ISSN:1860949X, DOI:10.1007/978-3-030-01632-6_8, 115-126. SJR (Scopus):0.215
9. Stratiev, D., Shishkova, I., Nikolaychuk, E., Atanassova, V., Atanassov, K.. Investigation of relations of properties of straight run and H-oil unconverted vacuum residual oils. Petroleum and Coal, 61, 4, 2019, ISSN:1337-7027, 763-776. SJR (Scopus):0.19

2018

1. Atanassov, Krassimir. Intuitionistic fuzzy interpretations of Barcan formulas. INFORMATION SCIENCES, 460, 2018, DOI:10.1016/j.ins.2017.10.052, 469-475. JCR-IF (Web of Science):4.305
2. Atanassov, K.. N-dimensional extended index matrices part 1. Advanced Studies in Contemporary Mathematics (Kyungshang), 28, 2018, ISSN:12293067, DOI:10.17777/ascm2018.28.2.245, 245-259. SJR (Scopus):0.286
3. Atanassov, K., Sotirova, E., Andonov, V.. Generalized Net Model of Multicriteria Decision Making Procedure Using Intercriteria Analysis. Advances in Intelligent Systems and Computing, 641, Springer, Cham, 2018, ISBN:978-3-319-66829-1, DOI:https://doi.org/10.1007/978-3-319-66830-7_10, 99-111. SJR (Scopus):0.174
4. Atanassov, Krassimir, Atanassova, Vassia, Szmidt, Eulalia, Kacprzyk, Janusz. Intuitionistic Fuzzy Interpretations of Some Formulas for Estimation of Preference Degree. Soft Computing Applications for Group Decision-making and Consensus Modeling. Studies in Fuzziness and Soft Computing, 357, Springer, Cham, 2018, ISBN:978-3-319-60206-6, DOI:https://doi.org/10.1007/978-3-319-60207-3_10, 153-161. SJR (Scopus):0.187
5. Atanassov, Krassimir, Vassilev, Peter. On the Intuitionistic Fuzzy Sets of n-th Type. Studies in Computational Intelligence, 738, Springer, Cham, 2018, ISBN:978-3-319-67945-7, ISSN:1860-949X, DOI:10.1007/978-3-319-67946-4_10, 265-274. SJR (Scopus):0.183
6. Atanassov, Krassimir, Georgiev, Ivan, Szmidt, Eulalia, Kacprzyk, Janusz. Multidimensional Intuitionistic Fuzzy Quantifiers and Level Operators. In: Sgurev V., Piuri V., Jotsov V. (eds) Learning Systems: From Theory to Practice. Studies in Computational Intelligence, vol 756., Springer, 2018, DOI:10.1007/978-3-319-75181-8_13, 267-280. SJR (Scopus):0.183
7. Atanassov, Krassimir. Intercriteria Analysis over Patterns. In: Sgurev V., Piuri V., Jotsov V. (eds) Learning Systems: From Theory to Practice. Studies in Computational Intelligence, 756, Springer, 2018, DOI:10.1007/978-3-319-75181-8_4, 61-71. SJR (Scopus):0.183
8. Atanassov, Krassimir. Intuitionistic fuzzy sets and interval valued intuitionistic fuzzy sets. Advanced Studies in Contemporary Mathematics (Kyungshang), 28, 2, 2018, 167-176. SJR (Scopus):0.284
9. Atanassov, Krassimir. n-Dimensional extended index matrices. Part 1. Advanced Studies in Contemporary Mathematics (Kyungshang), 28, 2, 2018, 245-259. SJR (Scopus):0.284
10. Atanassov, Krassimir. On the Most Extended Modal Operator of First Type over Interval-Valued Intuitionistic Fuzzy Sets. MATHEMATICS, 6, 7, 2018, DOI:10.3390/math6070123, JCR-IF (Web of Science):1.747   Q1, не оглавява ранглистата (Web of Science)   Линк
11. Atanassov, Krassimir. Two Intuitionistic Fuzzy Modal-Level Operators. ADVANCES IN FUZZY LOGIC AND TECHNOLOGY 2017, VOL 1. Book Series: Advances in Intelligent Systems and Computing, Vol. 641, Springer, 2018, DOI:10.1007/978-3-319-66830-7_9, 85-98. SJR (Scopus):0.174
12. Orozova, Daniela, Atanassov, Krassimir. Generalized Net Model of Processes Related to Big Data. Comptes rendus de l’Académie bulgare des Sciences, 71, 12, 2018, ISSN:1310–1331 (Print), 2367–5535 (Online), 1679-1686. JCR-IF (Web of Science):0.27
13. Sotirov, Sotir, Sotirova, Evdokia, Atanassova, Vassia, Atanassov, Krassimir, Castillo, Oscar, Melin, Patricia, Petkov, Todor, Surchev, Stanimir. A Hybrid Approach for Modular Neural Network Design Using Intercriteria Analysis and Intuitionistic Fuzzy Logic. COMPLEXITY, 2018, 2018, DOI:10.1155/2018/3927951, Art. 39279-(11 pages). SJR (Scopus):0.535, JCR-IF (Web of Science):2.591

2017

1. Atanassov, K.. Intuitionistic Fuzzy Modal Logics. Studies in Fuzziness and Soft Computing, 351, 2017, ISSN:14349922, DOI:https://doi.org/10.1007/978-3-319-48953-7_3, 79-124. SJR (Scopus):0.178
2. Atanassov, Krassimir, Szmidt, Eulalia, Kacprzyk, Janusz, Atanassova, Vassia. An approach to a constructive simplification of multiagent multicriteria decision making problems via intercriteria analysis. Comptes rendus de l’Academie bulgare des Sciences, 70, 8, 2017, ISSN:ISSN 1310–1331, 1147-1156. JCR-IF (Web of Science):0.251
3. Atanassov, Krassimir, Szmidt, Eulalia, Kacprzyk, Janusz. Multiplicative type of operations over intuitionistic fuzzy pairs. Proc. of Flexible Query Answering Systems’2017 (H. Christiansen, H. Jaudoin, P. Chountas, T. Andreasen, H. L. Larsen, Eds.), Springer, 2017, ISBN:ISBN 978-3-319-59691-4, ISSN:ISSN 0302-9743, 201-208. JCR-IF (Web of Science):0.302
4. Atanassov, Krassimir. Type-1 Fuzzy Sets and Intuitionistic Fuzzy Sets. Algorithms, 10, 3, 2017, ISSN:1999-4893, DOI:doi:10.3390/a10030106, 106. SJR (Scopus):0.341
5. Krumova, Sashka, Todinova, Svetla, Mavrov, Deyan, Marinov, Pencho, Atanassova, Vassia, Atanassov, Krassimir, Taneva, Stefka G.. Intercriteria analysis of calorimetric data of blood serum proteome. Biochimica et Biophysica Acta – General Subjects, 1861, 2017, ISSN:0304-4165, DOI:dx.doi.org/10.1016/j.bbagen.2016.10.012, 409-417. SJR:2.128, ISI IF:3.679

2016

1. Angelova N., Todorova M., Atanassov K.. GN IDE: Implementation, improvements and algorithms. Comptes Rendus de L’Academie Bulgare des Sciences, 69, 4, Academic Publishing House, 2016, 411-420. SJR (Scopus):0.206, JCR-IF (Web of Science):0.233
2. Atanassov K., Kacprzyk J.. On some modal type Intuitionistic fuzzy operators. Studies in Computational Intelligence, 623, Springer Verlag, 2016, 295-304. SJR (Scopus):0.219
3. Atanassov K.. Generalized nets as a tool for the modelling of data mining processes. Studies in Computational Intelligence, 623, Springer Verlag, 2016, 161-215. SJR (Scopus):0.219
4. Atanassov K.. Mathematics of intuitionistic fuzzy sets. Studies in Fuzziness and Soft Computing, 341, Springer Verlag, 2016, DOI:10.1007/978-3-319-31093-0_3, 61-86. SJR (Scopus):0.188
5. Atanassov, K. T.. Review and new results on intuitionistic fuzzy sets. International Journal Bioautomation,, 20, 2016, ISSN:13141902, S17-S26. SJR (Scopus):0.176
6. Todinova S., Mavrov D., Krumova S., Marinov P., Atanassova V., Atanassov K., Taneva S.G.. Blood Plasma Thermograms Dataset Analysis by Means of InterCriteria and Correlation Analyses for the Case of Colorectal Cancer. Int. J. Bioautomation, 20, 1, 2016, 115-124. SJR (Scopus):0.25
7. Traneva V., Marinov P., Atanassov K.. Index matrix interpretations of a new transportation-type problem. Comptes Rendus de L’Academie Bulgare des Sciences, 69, 10, Academic Publishing House, 2016, 1275-1282. SJR (Scopus):0.206, JCR-IF (Web of Science):0.233
8. Stratiev D., Sotirov S., Shishkova I., Nedelchev A., Sharafutdinov I., Vely A., Mitkova M., Yordanov D., Sotirova E., Atanassova V., Atanassov K., Stratiev D. D., Rudnev N., Ribagin S.. Investigation of relationships between bulk properties and fraction properties of crude oils by application of the intercriteria analysis. Petroleum Science and Technology, 34, 13, Taylor & Francis, 2016, 1113-1120. ISI IF:0.418

2015

1. Atanassov, Krassimir. Intuitionistic fuzzy logics as tools for evaluation of Data Mining processes. Knowledge-Based Systems, 80, Elsevier, 2015, ISSN:0950-7051, DOI:http://dx.doi.org/10.1016/j.knosys.2015.01.015, 122-130. SJR (Scopus):2.19, JCR-IF (Web of Science):2.947
2. Atanassov, Krassimir, Eulalia Szmidt, Janusz Kacprzyk, Vassia Atanassova. Intuitionistic fuzzy approach to the preference degree estimations. COMPTES RENDUS DE L ACADEMIE BULGARE DES SCIENCES, 68, 1, Academic Publishing House of the Bulgarian Academy of Sciences, 2015, ISSN:ISSN 1310–1331 (Print) ISSN 2367–5535 (Online), 25-32. SJR (Scopus):0.21, JCR-IF (Web of Science):0.284
3. Atanassov, Krassimir. A digital arithmetical function and some of its applications. Proceedings of the Jangjeon Mathematical Society, 18, 4, 2015, 511-528. SJR (Scopus):0.200
4. Atanassova, V., Doukovska, L., Mavrov, D., Atanassov, K.. InterCriteria decision making approach to EU member states competitiveness analysis: Temporal and threshold analysis. Proceedings of the 7th IEEE International Conference Intelligent Systems IS’2014, September 24‐26, 2014, Warsaw, Poland, Volume 1: Mathematical Foundations, Theory, Analyses, In Series: Advances in Intelligent Systems and Computing, 322, Springer International Publishing, 2015, ISBN:978-3-319-11312, ISSN:2194-5357, DOI:10.1007/978-3-319-11313-5, 95-106. SJR (Scopus):0.184
5. Marinov, E., Atanassov, K.. Integral modifications of the weight-centre operator, defined over intuitionistic fuzzy sets. Comptes Rendus de l’Academie bulgare des Sciences, 68, 7, Publishing House of the Bulgarian Academy of Sciences, 2015, 825-832. JCR-IF (Web of Science):0.284
6. Hadjiski, M., Atanassov, K.. Design and multiaspect functionality realization of hybrid intelligent control systems via generalized nets. Advances in Intelligent Systems and Computing, 232, 2015, ISSN:21945357, DOI:10.1007/978-3-319-11310-4_7, 71-80. SJR (Scopus):0.184
7. Stratiev, D., A. Nedelchev, I. Shishkova, A. Ivanov, I. Sharafutdinov, R. Nikolova, M. Mitkova, D. Yordanov, N. Rudnev, Z. Belchev, V. Atanassova, K. Atanassov. Dependence of visbroken residue viscosity and vacuum residue conversion in a commercial visbreaker unit on feedstock quality. Fuel Processing Technology, 138, Elsevier, 2015, ISSN:0378-3820, DOI:10.1016/j.fuproc.2015.06.044, 595-604. SJR (Scopus):1.571, JCR-IF (Web of Science):3.352
8. Stratiev, Dicho Stoyanov, Ivelina K Shishkova, Angel Nedelchev, Kiril E Kirilov, Ekaterina Nikolaychuk, Atanas S Ivanov, Ilshat Sharafutdinov, Anife Veli, Magdalena Mitkova, Tanya Tsaneva, Nedyalka Petkova, Ron Sharpe, Dobromir Yordanov, Zlatozvet Belchev, Svetoslav Nenov, Nikolay Rudnev, Vassia Atanassova, Evdokia Sotirova, Sotir Sotirov, Krassimir Atanassov. Investigation of relationships between petroleum properties and their impact on crude oil compatibility. Energy & Fuels, American Chemical Society, 2015, ISSN:0887-0624, DOI:10.1021/acs.energyfuels.5b01822, JCR-IF (Web of Science):2.79
9. Traneva, V., E. Sotirova, V. Bureva, K. Atanassov. Aggregation operations over 3-dimensional extended index matrices. Advanced Studies in Contemporary Mathematics, 25, 3, 2015, 407-416. SJR (Scopus):0.286

2014

1. Atanassov, K., Index matrices with function-type of elements, International Journal Information Models and Analyses, Volume 3, Number 2, 2014, 103-112
2. Atanassova, V., L. Doukovska, K. Atanassov, D. Mavrov. InterCriteria Decision Making approach to EU Member States Competitive Analysis. Proc. of 4th Int. Symposium on Business Modeling and Software Design, 24-26 June 2014, pp. 289-294, ISBN 978-989-758-032-1.
3. Atanassova, V., D. Mavrov, L. Doukovska, K. Atanassov   Discussion on the threshold values in the InterCriteria Decision Making approach. Notes on Intuitionistic Fuzzy Sets, Volume 20 (2014), No. 2, 94-99.

2013

1. Atanassov, K., Pulsated Fibonacci sequences. Part 2. Notes on Number Theory and Discrete Mathematics, Vol. 19, 2013, No. 4, 33-36.
2. Atanassov, K. On extended intuitionistic fuzzy index matrices, Notes on Intuitionistic Fuzzy Sets, Vol. 19, 2013, No. 4, 27-41.
3. Atanassova, V., E. Marinov, E. Velizarova, E. Sotirova, K. Atanassov, Clearcutting as a forest fire prevention measure. A generalized net model. 14th Int. Workshop on Generalized Nets, Burgas, 29 November 2013, 11-16.
4. Andonov, V., K. Atanassov, Generalized nets with characteristics of the places, Comptes Rendus de l’Academie bulgare des Sciences, Tome 66, No. 12, 2013, 1673-1680.
5. Parvathi, R., S. Thilagavathi, K. Atanassov, Isomorphism on Intuitionistic Fuzzy Directed Hypergraphs. International Journal of Scientific and Research Publications, Volume 3, Issue 3, March 2013, 1-8. ISSN 2250-3153
6. Alzebdi, M., P. Chountas, K. Atanassov, Arc-based Soft XML Pattern Matching, Lecture Notes in Artificial Intelligence, Vol. 8132, 2013 , 317-327 ISBN: 978-3-642-40768-0
7. Parvathi, R., C. Malathi, M. Akram, K. Atanassov, Intuitionistic fuzzy linear regression analysis, Fuzzy Optimization and Decision Making, Vol. 12, 2013, No. 2, 215-229.
8. Atanassov, K., Note on ϕ, ψ and σ-functions. Part 6. Notes on Number Theory and Discrete Mathematics, Vol. 19, 2013, No. 1, 22-24.
9. Atanassov, K., Short remark on Mobius function, Notes on Number Theory and Discrete Mathematics, Vol. 19, 2013, No. 2, 26-29.
10. Atanassov, K., Professor Anthony Shannon at F₄×F₅×F₅ years. Notes on Number Theory and Discrete Mathematics, Vol. 19, 2013, No. 3, 1-4.
11. Atanassov, K., Pulsating Fibonacci sequences. Notes on Number Theory and Discrete Mathematics, Vol. 19, 2013, No. 3, 12-14.
12. Atanassov, K., E. Szmidt, J. Kacprzyk, On intuitionistic fuzzy pairs, Notes on Intuitionistic Fuzzy Sets, Vol. 19, 2013, No. 3, 1-13.
13. Riečan, B., A. Ban, K. Atanassov. Modification of the weight-center operator, defined over intuitionistic fuzzy sets. Part 3. Notes on Intuitionistic Fuzzy Sets, Vol. 19, 2013, No. 3, 20-24.
14. Sotirova, E., V. Bureva, E. Velizarova, S. Fidanova, P. Marinov, A. Shannon, K. Atanassov, Modelling forest fire spread through a Game Method for Modelling based on hexagonal cells with intuitionistic fuzzy estimations. Notes on Intuitionistic Fuzzy Sets, Vol. 19, 2013, No. 3, 73-80.
15. Riečan, B., A. Ban, K. Atanassov. Modification of the weight-center operator, defined over intuitionistic fuzzy sets. Part 2. Notes on Intuitionistic Fuzzy Sets, Vol. 19, 2013, No. 2, 1-5.
16. Atanassov, K., On intuitionistic fuzzy implications, negations and law (¬A → ¬B) → ((¬¬A → ¬¬B) → ¬¬A), Notes on Intuitionistic Fuzzy Sets, Vol. 19, 2013, No. 2, 10-20.
17. Marinov, E., E. Velizarova, K. Atanassov, An intuitionistic fuzzy estimation of the area of 2D-figures, Notes on Intuitionistic Fuzzy Sets, Vol. 19, 2013, No. 2, 57-70.
18. Hadjistoykov, K. Atanassov, Remark on intuitionistic fuzzy cognitive maps, Notes on Intuitionistic Fuzzy Sets. Vol. 19, 2013, No. 1, 1-6.
19. Atanassov, K. A short remark on intuitionistic fuzzy operators X_a,b,c,d,e,f and x_a,b,c,d,e,f, Notes on Intuitionistic Fuzzy Sets. Vol. 19, 2013, No. 1, 54-56.
20. Pencheva T., M. Angelova, K. Atanassov, Quality Assessment of Multi-population Genetic Algorithms Performance, International Journal of Scientific and Engineering Research, 2013, Vol. 4, No. 12, 1870-1875.
21. Matveev, M., V. Andonov, K. Atanassov, M. Milanova, Generalized Net Model for Telecommunication Processes in Telecare Services, Proceedings of the 2013 International Conference on Electronics and Communication Systems, ECS 2013 – July 16-19, 2013, Rhodes (Rodos), 142-145.
22. Pencheva T., M. Angelova, K. Atanassov, Chapter 11. Genetic Algorithms Quality Assessment Implementing Intuitionistic Fuzzy Logic, Vasant P. (Ed.), Handbook of Research on Novel Soft Computing Intelligent Algorithms: Theory and Practical Applications, IGI Global, Hershey, Pennsylvania (USA), 327-354.
23. Atanassov, K.. S. Sotirov, Index matrix interpretation of the Multilayer perceptron, Proc. of IEEE International Symposium on Innovations in Intelligent Systems and Applications (INISTA), 19-21 June 2013, Albena, INSPEC Accession Number: 13710966, ISBN: 978-1-4799-0659-8.
24. Angelova M., K. Atanassov, T. Pencheva, Intuitionistic Fuzzy Logic as a Tool for Quality Assessment of Genetic Algorithms Performances, Fidanova S. (Ed.), Recent Advances in Computational Optimization, SCI 470 (Studies in Computational Intelligence, Vol. 470), Springer, 2013, 1-13.
25. Riečan, B., A. Ban, K. Atanassov. Modification of the weight-center operator, defined over intuitionistic fuzzy sets. Part 1. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 10, 2013, 1-4.
26. Shishkova, I., R. Dinkov, D. Stratiev, K. Atanasssov, Generalized net model of vacuum residue processing in a refinery. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 10, 2013, 118-124.
27. Szmidt, E., J. Kacprzyk, K. Atanassov, Iintuitionistic fuzzy modifications of some Peneva–Popchev formulas for estimation of preference degree. Part 1. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 10, 2013, 12-20.
28. Atanassov, K., E. Sotirova, V. Bureva, A. Shannon. Temporal intuitionistic fuzzy index matrices. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 10, 2013, 54-65.
29. Hadjistojkov, P., K. Atanassov. Remark on intuitionistic fuzzy cognitive maps with descriptors. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 10, 2013, 81-88.
30. Atanassov, K., T. Pencheva. Generalized net model of simple genetic algorithm modifications. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 10, 2013, 97-106.
31. Atanassov, K., On the quantifiers of the intuitionistic fuzzy logic. In:- New Trends in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Vol. 1: Foundations, SRI, Polish Academy of Sciences, 2013, 1-8.
32. Pencheva, T., K. Atanassov, A. Shannon, Generalized net model of rank-based fitness assignment in genetic algorithms. In:- New Trends in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Vol. 2: Applications, SRI, Polish Academy of Sciences, 2013, 127-136.
33. Sotirov, S., M. Krawczak, K. Atanassov, Modelling of brain-state-in-a-box neural network with a generalized net. In:- New Trends in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Vol. 2: Applications, SRI, Polish Academy of Sciences, 2013, 153-159.
34. Shahpazov, G., L. Doukovska, K. Atanassov, Generalized net model of the methodology for analysis of the creditworthiness and evaluation of credit risk in SMEs financing. Proceedings of the Third International Symposium on Business Modeling and Software Design, Noordwijkerhout, The Netherlands, 8-10 July 2013, 292-297.
35. Atanassov, K., E. Sotirova, V. Bureva, On index matrices. Part 4: New operations over index matrices. Advanced Studies in Contemporary Mathematics, Vol. 23, 2013, No. 3, 547-552.
36. Dimov, I., K. Atanassov, Interpretation of a Monte Carlo approach of a finite difference scheme by a game method for modeling. Proceedings of the Jangjeon Mathematical Society, Vol. 16, 2013, No. 3, 381-387.
37. Atanassov, K., E. Sotirova, On some applications of the game method for modeling. Part 4: Interpretations of some stochastic processes. Proceedings of the Jangjeon Mathematical Society, Vol. 16, 2013, No. 3, 301-310.
38. Atanassova, L., K. Atanassov, On a Game-Method for Modeling with Intuitionistic Fuzzy Estimations. Part 2. In:- Monte Carlo Methods and Applications (K. Sabelfeld and I. Dimov, Eds.), Walter de Gruyter GmbH, Berlin/Boston, 2013, 29-38.
39. Angelova, M., K. Atanassov, T.. Pencheva, Intuitionistic fuzzy logic as a tool for quality assessment of genetic algorithms performances. In:- Recent Advances in Computational Optimization, (S. Fidanova, Ed.), Springer, Berlin, 2013, 1-13.
40. Atanassov, K., A formula for the n-th prime number, Comptes Rendus de l’Academie bulgare des Sciences, Tome 66, No. 4, 2013, 503-506.
41. Sotirova, E., S. Sotirov, A. Dimitrov, K. Atanassov, On some applications of game method for modeling. Part 3: Simulation of oil transformation in marine environment, Proceedings of the Jangjeon Mathematical Society, Vol. 16, 2013, No. 2, 293-300.
42. Atanassov, K., On index matrices, Part 3: On the hierarchical operation over index matrices. Advanced Studies in Contemporary Mathematics, Vol. 23, 2013, No. 2, 225-231.
43. Atanassov, K., On Zadeh’s intuitionisti fuzzy disjunctions and conjunctions. In:- On Fuzziness. A Homage to Lotfi A. Zadeh (R. Seising et al., Eds.), Springer, Berlin, 2013, Vol. 1, 11-15.

2012

1. Atanassov, K., On a new approach towards defining intuitionistic fuzzy subtractions, New Developments in Fuzzy Sets, Intuitionisitc Fuzzy Sets, Generalized Nets and Related Topics, Vol. 1: Foundations, SRI, Polish Academy of Sciences, 2012, 1-35.
2. Tcvetkov, R., E. Szmidt, J. Kacprzyk, K. Atanassov, A modified Hausdorff distance between intuitionisti fuzzy sets. Comptes Rendus de l’Academie bulgare des Sciences, Tome 65, No. 8, 2012, 1035-1042.
3. Rangasamy, P., P. Vassilev, K. Atanassov, A note on bijective correspondence between intuitionistic fuzzy sets and intuitionistic fuzzy sets of p-th type. New Developments in Fuzzy Sets, Intuitionisitc Fuzzy Sets, Generalized Nets and Related Topics, Vol. 1: Foundations, SRI, Polish Academy of Sciences, 2012, 143-147.
4. Roeva, O., T. Pencheva, K. Atanassov, Generalized net of a genetic algorithm with intuitionistic fuzzy selection operation. New Developments in Fuzzy Sets, Intuitionisitc Fuzzy Sets, Generalized Nets and Related Topics, Vol. 1: Foundations, SRI, Polish Academy of Sciences, 2012, 167-178.
5. Kosev, K., O. Roeva, K. Atanassov, Generalized net model of cytokinin/auxin interactions for plant root formation. New Developments in Fuzzy Sets, Intuitionisitc Fuzzy Sets, Generalized Nets and Related Topics, Vol. 2: Applications, SRI, Polish Academy of Sciences, 2012, 91-99.
6. Ribagin, S., V. Chakarov, K. Atanassov, Generalized net model of the upper limb in relaxed position. New Developments in Fuzzy Sets, Intuitionisitc Fuzzy Sets, Generalized Nets and Related Topics, Vol. 2: Applications, SRI, Polish Academy of Sciences, 2012, 201-210.
7. Atanassov, K. Note on ϕ, ψ and σ-functions. Part 5, Notes on Number Theory and Discrete Mathematics, Vol. 18, 2012, No. 1, 58-62.
8. Atanassov, K. Short remarks on Jacobsthal numbers, Notes on Number Theory and Discrete Mathematics, Vol. 18, 2012, No. 2, 63-64.
9. Atanassov, K., A property of the intuitionistic fuzzy implications, Notes on Intuitionistic Fuzzy Sets. Vol. 18, 2012, No. 2, 1-12.
10. Atanassov, K., On the operators partially extending the extended intuitionistic fuzzy operators from modal type, Notes on Intuitionistic Fuzzy Sets. Vol. 18, 2012, No. 3, 16-22.
11. Atanassov, K., Intuitionistic fuzzy implication →^C and negation ¬^C. Notes on Intuitionistic Fuzzy Sets. Vol. 18, 2012, No. 4, 1-7.
12. Bureva, V., E. Sotirova, K. Atanassov, New operations over intuitionistic fuzzy index matrices. Notes on Intuitionistic Fuzzy Sets. Vol. 18, 2012, No. 4, 12-18.
13. Pencheva, T., N. Novachev, D. Stratiev, K. Atanassov, Generalized net model of the process of evaluation of the environmental impact of refinery activity using intuitionistic fuzzy estimations. Notes on Intuitionistic Fuzzy Sets. Vol. 18, 2012, No. 4, 32-39.
14. Andonov, V., T. Stojanov, K. Atanassov, P. Kovachev, Generalized net model for telecommunication processes in telecare services, Proc. of the First Int. Conf. on Telecommunications and Remote Sensing, Sofia, 29-30 Aug. 2012, 158-162.
15. Alzebdi, M., P. Chountas, K. Atanassov, Approximate XML query matching and rewriting using intuitionistic fuzzy trees, Proc. of the 6^th IEEE Int. Conf. “Intelligent Systems”, Sofia, 6-8 Sept. 2012, 200-205.
16. Angelova, M., K. Atanassov, T. Pencheva, Intuitionistic fuzzy estimations of purposeful model parameters genesis. Proc. of the 6^th IEEE Int. Conf. “Intelligent Systems”, Sofia, 6-8 Sept. 2012, 206-211.
17. Velizarova, E., E. Sotirova, K. Atanassov, P. Vassilev, S. Fidanova, On the gome method for the forest fire sprend modeling with considering the wind effect. Proc. of the 6^th IEEE Int. Conf. “Intelligent Systems”, Sofia, 6-8 Sept. 2012, 216-220.
18. Andonov, V., M. Stefanova-Pavlova, T. Stojanov, M. Angelova, K. Atanassov, Generalized net model of telehealth services, Proc. of the 6^th IEEE Int. Conf. “Intelligent Systems”, Sofia, 6-8 Sept. 2012, 221-224.
19. Ribagin, S., V. Chakarov, K. Atanassov, Generaized net model of the upper limb vascular system. Proc. of the 6^th IEEE Int. Conf. “Intelligent Systems”, Sofia, 6-8 Sept. 2012, 229-232.
20. Shannon, A., B. Riečan, D. Orozova, E. Sotirova, K. Atanassov, M. Krawczak, P. Melo-Pinto, R. Parvathi, T. Kim, Generaized net model of the process of selection and usage of an intelligent e-learning system. Proc. of the 6^th IEEE Int. Conf. “Intelligent Systems”, Sofia, 6-8 Sept. 2012, 233-236.
21. Vardeva, I., K. Atanassov. Generalized net model for protection of patients’ personal e-data, transmitted between healthcare information systems over the internet, Comptes Rendus de l’Academie bulgare des Sciences, Tome 65, No. 3, 2012, 291-298.
22. Atanassov, K. On the game method for modelling. Advanced Studies in Contemporary Mathematics, Vol. 22, 2012, No. 2, 189-207.
23. Sotirova, E., D. Dimitrov, K. Atanassov. On some applications of game method for modeling. Part 1: Forest dynamics, Proceedings of the Jangjeon Mathematical Society, Vol. 15, 2012, No. 2, 115-123.
24. Sotirova, E., K. Atanassov, S. Fidanova, E. Velizarova, P. Vassilev, A. Shannon, Application of the game method for modelling the forest fire perimeter expansion. Part 1: A model fire intensity without effect of wind, IFAC Workshop on Dynamics and Control in Agriculture and Food Processing, Plovdiv, 13-16 June 2012, 159-163.
25. Sotirova, E., K. Atanassov, S. Fidanova, E. Velizarova, P. Vassilev, A. Shannon, Application of the game method for modelling the forest fire perimeter expansion. Part 2: A model fire intensity with effect of wind, IFAC Workshop on Dynamics and Control in Agriculture and Food Processing, Plovdiv, 13-16 June 2012, 165-169.
26. Sotirova, E., K. Atanassov, S. Fidanova, E. Velizarova, P. Vassilev, A. Shannon, Application of the game method for modelling the forest fire perimeter expansion. Part 3: A model of the forest fire speed propagation in different homogenous vegetation types, IFAC Workshop on Dynamics and Control in Agriculture and Food Processing, Plovdiv, 13-16 June 2012, 171-174.
27. Orozova, D., K. Atanassov, Generalized net model of the process of selection and usage of an intelligent e-learning system, Comptes Rendus de l’Academie bulgare des Sciences, Tome 65, No. 5, 2012, 591-598.
28. Atanassov, K., S. Sotirov, Representation of the neural networks by the game method for modeling, Advanced Studies in Contemporary Mathematics, Vol. 22, 2012, No. 3, 347-354.
29. Sotirova, E., N. Dobrinkova, K. Atanassov. On some applications of game method for modeling. Part 2: Development of forest fire, Proceedings of the Jangjeon Mathematical Society, Vol. 15, 2012, No. 3, 335-342.
30. Angelova, M., K. Atanassov, T. Pencheva, Purposeful model parameters genesis in simple genetic algorithms, Computers and Mathematics with Applications, Vol.64, 2012, 221-228.
31. Atanassova, L., K. Atanassov, On a game-method for modelling with intuitionistic fuzzy estimations: Part 1, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 7116, 2012, 182-189.
32. Atanassova, V., S. Fidanova, P. Chountas, K. Atanassov, A generalized net with an ACO-algorithm optimization component, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 7116, 2012, 190-197.

2011

1. Alzebdi, M., P. Chountas, K. Atanassov, Intuitionistic fuzzy XML query matching, Lecture Notes in Computer Science, Vol. 7022 LNAI, 2011, 306-317.
2. Chountas, P., E. Rogova, K. Atanassov, The notion of H-IFS: An approach for enhancing the OLAP capabilities in oracle10g, International Journal of Intelligent Systems, Vol. 26, Issue 3, March 2011, 262-283.
3. Atanassov K., Remarn on Jacobsthal numbers, Part 2. Notes on Number Theory and Discrete Mathematics, Vol. 17, 2011, No. 2, 37-39.
4. Atanassov, K., A. Shannon, The digital root function for Fibonacci-type sequences. Advanced Studies in Contemporary Mathematics, Vol. 21, 2011, No. 3, 251-254.
5. Atanassov, K., On some Pascal’s like triangles. Part 5. Advanced Studies in Contemporary Mathematics, Vol. 21, 2011, No. 3, 291-299.
6. Atanassov, K. On some open and solved problems in the theory and applications of intuitionistic fuzzy sets. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 9, 2011, 1-34.
7. Atanassov, K. Definitions and properties of some intuitionistic fuzzy subtractions. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 9, 2011, 35-56.
8. Shannon, A., E. Szmidt, E. Sotirova, J. Kacprzyk, K. Atanassov, T. Kim. Intuitionistic fuzzy estimations of students’ team forming. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 9, 2011, 77-83.
9. Atanassov, K. On a new approach towards defining intuitionistic fuzzy subtractions. Acta Universitatis Matthiae Belii, Number 19, 2011, 11-20.
10. Atanassov, K. Note on ϕ, ψ and σ-functions. Part 4. Notes in Number Theory and Discrete Mathematics, Vol. 17, 2011, No. 4, 69-72.
11. Atanassov, K. Note on ϕ, ψ and σ-functions. Part 3. Notes in Number Theory and Discrete Mathematics, Vol. 17, 2011, No. 3, 13-14.
12. Atanassov, K. Two modifications of Klamkin’s inequality, Notes in Number Theory and Discrete Mathematics, Vol. 17, 2011, No. 1, 1-3.
13. Atanassov, K. An extension of one of Klamkin’s inequalities, Advanced Studies in Contemporary Mathematics, Vol. 21, 2011, No. 4, 347-350.
14. Parvathi, R., S. Sotirov, G. Gluhchev, K. Atanassov, A generalized net model of intuitionistic fuzzy image preprocessing. Comptes Rendus de l’Academie bulgare des Sciences, Tome 64, 2011, No. 3, 333-338.
15. Atanassov, K. On Zadeh’s intuitionistic fuzzy disjunction and conjunction. Notes on Intuitionistic Fuzzy Sets, Vol. 17, 2011, No. 1, 1-4.
16. Atanassov, K., E. Szmidt, J. Kacprzyk, On intuitionistic fuzzy multi-dimensional sets. Part 4. Notes on Intuitionistic Fuzzy Sets. Vol. 17, 2011, No. 2, 1-7.
17. Parvathi, R., A. Shannon, P. Chountas, K. Atanassov, On intuitionistic fuzzy tree-interpretations by index matrices. Notes on Intuitionistic Fuzzy Sets. Vol. 17, 2011, No. 2, 17-24.
18. Atanassov, K. Second Zadeh’s intuitionistic fuzzy implication. Notes on Intuitionistic Fuzzy Sets. Vol. 17, 2011, No. 3, 11-14
19. Riečan, B., K. Atanassov, On Zadeh’s intuitionistic fuzzy subtraction. Notes on Intuitionistic Fuzzy Sets. Vol. 17, 2011, No. 4, 1-4.
20. Atanassov, K., V. Atanassova, P. Chountas, A. Shannon, Generalized nets with places having intuitionistic fuzzy capacities. Notes on Intuitionistic Fuzzy Sets. Vol. 17, 2011, No. 4, 21-28.
21. Atanassov, K., The intuitionistic fuzzy sets as constructive objects, Recent Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. I: Foundations. Warsaw, SRI Polush Academy of Sciences, 2011, 1-23.
22. Atanassova, L., K. Atanassov, Intuitionistic fuzzy interpretations of Conway’s game of life. Part 3: Modal and extended modal transformations of the game field. Recent Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. I: Foundations. Warsaw, SRI Polush Academy of Sciences, 2011, 25-31.
23. Kosev, K., O. Roeva, K. Atanassov, Generalized net model of cytokinin-auxin signalling interactions. Recent Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. II: Applications. Warsaw, SRI Polush Academy of Sciences, 2011, 93-100.
24. Pencheva, T., K. Atanassov, A. Shannon, Generalized net model of of selection function choice in genetic algorithms. Recent Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. II: Applications. Warsaw, SRI Polush Academy of Sciences, 2011, 193-201.
25. Atanassova, L., K. Atanassov, Intuitionistic fuzzy interpretations of Conway’s game of life. Lecture Notes in Computer Science, Vol. 6046, Springer, Berlin, 2011, 232-239.
26. Atanassova, V., K. Atanassov, Ant colony optimization approach to tokens’movement within generalized nets. Lecture Notes in Computer Science, Vol. 6046, Springer, Berlin, 2011, 240-247.
27. Fidanova, S., K. Atanassov, P. Marinov, Start strategies of ACO applied on subset problems. Lecture Notes in Computer Science, Vol. 6046, Springer, Berlin, 2011, 248-255.
28. Fidanova, S. , P. Marinov, K. Atanassov, Sensitivity analysis of ACO start strategies for subset problems. Lecture Notes in Computer Science, Vol. 6046, Springer, Berlin, 2011, 248-255.

2010

1. Chountas, P., E. Rogova, K. Atanassov, Expressing hierarchical preferences in OLAP queries, In:- Uncertainty Approaches for Spatial Modeling and Processing (J. Kacprzyk, F. Petry and A. Yazici, Eds.), Springer, Berlin, 2010, 61-77.
2. Dobrinkova, N., S. Fidanova, K. Atanassov. Game-method model for field fires. Lecture Notes in Computer Science, Vol. 5910, 2010, 173-179.
3. Fidanova, S., K. Atanassov, Generalized nets as tools for modelling of the ant colony optimization algorithms. Lecture Notes in Computer Science, Vol. 5910, 2010, 326-333.
4. Atanassov, K. On index matrices, Part 1: Standard cases. Advanced Studies in Contemporary Mathematics, Vol. 20, 2010, No. 2, 291-302.
5. Atanassov, K., D. Dimitrov, V. Atanassova, Algorithms for tokens transfer in the different types of intuitionistic fuzzy generalized nets, Cybernetics and Information Technologies, Vol. 10, 2010, No. 4, 22-35.
6. Fidanova, S., P. Marinov, K. Atanassov, Generalized net models of the process of ant colony optimization with different startegies and intuitionistic fuzzy estimations. Proceedings of the Jangjeon Mathematical Society, Vol. 13, 2010, No. 1,1-12.
7. Atanassov, K., M. Hadjiski, Generalized nets and intelligent systems, Int. Journal of General Systems, Vol. 39, 2010, No. 5, 457-470.
8. Atanassov, K., A new approach to the distances between intuitionistic fuzzy sets. In: Information Processing and Management of Uncertainty in Knowledge-Based Systems (Eyke Hullermeier, Rudolf Kruse and Frank Hoffmann, Eds.), Springer, Heidelberg, 2010, 581-590.
9. Sotirov, S. K. Atanassov, M. Krawczak, Generalized net model for parallel optimization of feed-forward neural network with variable learning rate backpropagation algorithm with time limit. In:- Intelligent Systems: From Theory to Practice (V. Sgurev, M. Hadjiski, J. Kacprzyk, Eds.), Studies in Computational Intelligence, Vol. 299, Springer, Berlin, 2010, 361-371.
10. Shannon, A., D. Orozova, E. Sotirova, M. Hristova, K. Atanassov, M. Krawczak, P. Melo- Pinto, R. Nikolov, S. Sotirov, T. Kim, Towards a model of the digital university: a generalized net model for producing course timetables and for evaluating the quality of subjects. . In:- Intelligent Systems: From Theory to Practice (V. Sgurev, M. Hadjiski, J. Kacprzyk, Eds.), Studies in Computational Intelligence, Vol. 299, Springer, Berlin, 2010, 373-381.
11. Atanassov, K., A. Shannon, Some relations associated with the Alevi Sequence, Congressum Numerantium, Vol. 200. 2010, 197-201.
12. Atanassov, K. On index matrices, Part 2: Intuitionistic fuzzy case. Proceedings of the Jangjeon Mathematical Society, Vol. 13, 2010, No. 2, 121-126.
13. Atanassov, K., On intuitionistic fuzzy negations and Law of Excluded Middle, Proceedings of the 2010 IEEE International Conference on Intelligent Systems (IS 2010) , London, 7-9 July 2010, 266-269.
14. Sotirov, S., M. Krawczak, K. Atanassov, Generalized net model for parallel optimization of multilayer perceptron with momentum backpropagation algorithm, Proceedings of the 2010 IEEE International Conference on Intelligent Systems (IS 2010) , London, 7-9 July 2010, 281-285.
15. Roeva, O., T. Pencheva, K. Atanassov, A. Shannon, Generalized Net Model of Selection Operator of Genetic Algorithms, Proceedings of the 2010 IEEE International Conference on Intelligent Systems (IS 2010) , London, 7-9 July 2010, 286-289.
16. Atanassov, K., On two topological operators over intuitionistic fuzzy sets, Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 8, 2010, 1-7.
17. Atanassov, K., New ways for altering the intuitionistic fuzzy experts’ estimations, Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 8, 2010, 24-29.
18. Atanassov, K., Cantor’s norms for intuitionistic fuzzy sets, Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 8, 2010, 36-39.
19. Fidanova, S., K. Atanassov, Generalized net models and intuitionistic fuzzy estimations of the process of ant colony optimization, Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 8, 2010, 109-124.
20. Fidanova S., Atanassov K., Marinov P. ACO with semi-random start applied on MKP, In Proc. of Int. Conf. Multiconference on Computer Science and Information Technology,18-20 October 2010 Wisla, Poland, 2010, 887 – 891.
21. Atanassov, K., On the new intuitionistic fuzzy operator x_a,b,c,d,e,f Notes in Intuitionistic Fuzzy Sets, Vol. 16, 2010, No. 2, 35-38.
22. Riečan, B. and K. Atanassov. Operation division by n over intuitionistic fuzzy sets. Notes in Intuitionistic Fuzzy Sets, Vol. 16, 2010, No. 4, 1-4.
23. Atanassova, L., G. Gluhchev and K. Atanassov, On intuitionistic fuzzy histograms. Notes in Intuitionistic Fuzzy Sets, Vol. 16, 2010, No. 4, 31-36.
24. Atanassov, K., Combined 2-Fibonacci sequences. Notes on Number Theory and Discrete Mathematics, Vol. 16, 2010, No. 2, 24-28.
25. Atanassov, K. Intuitionistic fuzzy subtractions —^ε,η‘ and —^ε,η”. Developments in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. I: Foundations. Warsaw, SRI Polish Academy of Sciences, 2010, 1-10.
26. Atanassov, K., E. Szmidt, J. Kacprzyk, On intuitionistic fuzzy multi-dimensional sets. Part 3. Developments in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. I: Foundations. Warsaw, SRI Polish Academy of Sciences, 2010, 19-26.
27. Shannon, A., P. Rangasamy, K. Atanassov, P. Chountas. On intuitionistic fuzzy trees. Developments in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. I: Foundations. Warsaw, SRI Polush Academy of Sciences, 2010, 177-184.
28. Atanassov, K., On the intuitionistic fuzzy implications and negations. Part 1. In:- 35 Years of Fuzzy Set Theory – Celebratory Volume Dedicated to the Retirement of Etienne E. Kerre (C. Cornelis at al., Eds.), Springer, Berlin, 2010, 19-38.
29. Sotirov, S., K. Atanassov, M. Krawczak. Generalized net model for parallel optimization of feed-forward neural network with variable learning rate backpropagation algorithm with time limit. In:- Intelligent System: From Theory to Practice (V. Sgurev, M. Hadjiski, J. Kacprzyk, Eds.). Springer, Berlin, 2010, 361-372.
30. Shannon, A., D. Orozova, E. Sotirova, M. Hristova, K. Atanassov, M. Krawczak, P. Melo-Pinto, R. Nikolov, S. Sotirov, T. Kim, Towards a model of the digital university: A generalized net model for producing course timetables and for evaluation the quality measurements. In:- Intelligent System: From Theory to Practice (V. Sgurev, M. Hadjiski, J. Kacprzyk, Eds.). Springer, Berlin, 2010, 373-382.
31. Atanassov, K. Note on ϕ, ψ and σ-functions. Part 2. Notes on Number Theory and Discrete Mathematics, Vol. 16, 2010, No. 3, 25-28.
32. Atanassov, K., Combined 2-Fibonacci sequences. Part 2. Notes on Number Theory and Discrete Mathematics, Vol. 16, 2010, No. 4, 18-24.
33. Atanassov, K., A. Shannon, A short remark on Fibonacci-type sequences, Mobius strips and the -function. International Journal of Mathematical Education in Science and Technology, Vol. 41, No. 8, 2010, 1125-1127.

2009

1. Gluhchev, G., K. Atanassov, S. Hadjitodorov, A. Shannon. A generalized net model of the process of scene analysis. Cybernetics and Information Technologies, Vol. 9, 2009, No. 1, 13-17.
2. Atanassov, K. Theorem for equivalence of the two most general intuitionistic fuzzy modal operators. Notes on Intuitionistic Fuzzy Sets, Vol. 15, 2009, No. 1, 26-31.
3. Atanassov, K. Remark on operation “subtraction” over intuitionistic fuzzy sets. Notes on Intuitionistic Fuzzy Sets, Vol. 15, 2009, No. 3, 20-24.
4. Atanassov, K., D. Dimitrov. On one of Baczyncki-Jayaram’s problems. Cybernetics and Information Technologies, Vol. 9, 2009, No. 2, 14-20.
5. Sotirov, S., K. Atanassov. Intuitionistic fuzzy feed forward neural network. Cybernetics and Information Technologies, Vol. 9, 2009, No. 2, 62-68.
6. Atanassov, K. A remark on an arithmetic function. Part 2. Notes on Number Theory and Discrete Mathematics, Vol. 15, 2009, No. 3, 21-22.
7. Atanassov, K. A remark on an arithmetic function. Part 3. Notes on Number Theory and Discrete Mathematics, Vol. 15, 2009, No. 4, 23-27.
8. Pencheva, T., K. Atanassov and A. Shannon. Modelling of a stochastic universal sampling selection operator in genetic algorithms using generalized nets. Proceedings of the Tenth International Workshop on Generalized Nets (K, Atanassov and A. Shannon, Eds.), Sofia, 5 Dec. 2009, 1-7.
9. Pencheva, T., K. Atanassov, A. Shannon. Modelling of roulette wheel selection operator in genetic algorithms using generalized nets. Bioautomation, Vol. 13, 2009, No. 4, 257-264.
10. Fidanova, S., K. Atanassov, P. Marinov, R. Parvathi, Ant colony optimization for multiple knapsack problems with controlled starts. Bioautomation, Vol. 13, 2009, No. 4, 271-280.
11. Atanassov, K., D. Dimitrov. Extension of one of Baczyncki-Jayaram’s problems. Comptes Rendus de l’Academie bulgare des Sciences, Tome 62, 2009, No. 11, 1377-1386.
12. Atanassov, K., P. Rangasamy, On intuitionistic fuzzy sets and interval-valued intuitionistic fuzzy sets. Advanced Studies in Contemporary Mathematics, Vol. 18, 2009, No. 1, 1-8.
13. Rangasamy, P., P. Vassilev, K. Atanassov. New topological operators over intuitionistic fuzzy sets. Advanced Studies in Contemporary Mathematics, Vol. 18, 2009, No. 1, 49-57.

2008

1. Atanassov, K. 25 years of intuitionistic fuzzy sets or the most interesting results and the most important mistakes of mine. Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Vol. I: Foundations, Academic Publishing House EXIT, Warszawa, 2008, 1-35.
2. Atanassov, K., E. Szmidt, J. Kacprzyk, P. Rangasamy. On intuitionistic fuzzy multi-dimensional sets. Part 2. Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Vol. I: Foundations, Academic Publishing House EXIT, Warszawa, 2008, 43-51.
3. Chountas, P., K. Atanassov. The notion of H-IFS. Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Vol. II: Applications, Academic Publishing House EXIT, Warszawa, 2008, 39-48.
4. Gluhchev, G., K. Atanassov, V. Vassilev. A generalized net model of scene analysis process. Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Vol. II: Applications, Academic Publishing House EXIT, Warszawa, 2008, 63-68.
5. Atanassov, K., E. Szmidt, J. Kacprzyk, On intuitionistic fuzzy multi-dimensional sets. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 7, 2008, 1-6.
6. Roeva, O., K. Atanassov. Generalized net model of a modified genetic algorithm. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 7, 2008, 93-99.
7. Fidanova, S., K. Atanassov. Generalized net models of the process of ant colony optimization. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 7, 2008, 108-114.
8. Fidanova, S., K. Atanassov. Generalized net models for the process of hybrid ant colony optimization. Comptes Rendus de l’Academie bulgare des Sciences, Tome 61, 2008, No. 12, 1535-1540.
9. Hinde, Ch., K. Atanassov. On intuitionistic fuzzy negations and intuitionistic fuzzy modal operators with contradictory evidence. Proceedings of the 9th WSEAS Int. Conf. on Fuzzy Systems, Sofia, 2-4 May 2008, 166-170.
10. Atanassov, K. The most general form of one type of intuitionistic fuzzy modal operators. Part 2. Proceedings of the Twelfth International Conference on Intuitionistic Fuzzy Sets (J. Kacprzyk and K. Atanassov, Eds), Sofia, 17-18 May 2008, Vol. 1. In: Notes on Intuitionistic Fuzzy Sets, Vol. 14, 2008, No. 1, 27-32.
11. Atanassov, K. Extended level operator over intuitionistic fuzzy sets. Notes on Intuitionistic Fuzzy Sets, Vol. 14, 2008, No. 3, 25-28.
12. Riečan, B., K. Atanassov, Some properties of two operators over intuitionistic fuzzy sets. Notes on Intuitionistic Fuzzy Sets, Vol. 14, 2008, No. 4, 6-10.
13. Atanassov, K. On intuitionistic fuzzy negations and intuitionistic fuzzy level operators. Notes on Intuitionistic Fuzzy Sets, Vol. 14, 2008, No. 4, 15-19.
14. Atanassov, K. Generalized nets as tools for modelling of intelligent systems. Proceedings of the Ninth International Workshop on Generalized Nets (K, Atanassov and A. Shannon, Eds.), Sofia, 4 July 2008, Vol. 1, 1-8.
15. Fidanova, S. and K. Atanassov. Generalized net models of the process of ant colony optimization with intuitionistic fuzzy estimations. Proceedings of the Ninth International Workshop on Generalized Nets (K, Atanassov and A. Shannon, Eds.), Sofia, 4 July 2008, Vol. 1, 41-48.
16. Atanassov, K., M. Hadjiski, Generalized nets as tools for modelling of intelligent systems. Proceedings of the 4-th International IEEE Conf. Intelligent Systems, Varna, 6-8 Sept. 2008, Vol. 1, 1-45 – 1-49.
17. Atanassov, K., M. Krawczak, S. Sotirov. Generalized net model for parallel optimization of feed-forward neural network with variable learning rate backpropagation algorithm. Proceedings of the 4-th International IEEE Conf. Intelligent Systems, Varna, 6-8 Sept. 2008, Vol. 2, 16-16 – 16-19.
18. Shannon, A., D. Orozova, E. Sotirova, K. Atanassov, M. Krawczak, P. Melo-Pinto, R. Nikolov, S. Sotirov, T. Kim. Towards a model of the digital university: a generalized net model for producing course timetables. Proceedings of the 4-th International IEEE Conf. Intelligent Systems, Varna, 6-8 Sept. 2008, Vol. 2, 16-25 – 16-28.
19. Atanassov, K. Three-dimensional extensions of Fibonacci sequences. Part 1. Notes on Number Theory and Discrete Mathematics, Vol. 14, 2008, No. 3, 15-18.
    Atanassov, K., A. Shannon, A Fibonacci cylinder, Number Theory and Discrete Mathematics, Vol. 14, 2008, No. 4, 4-9.
20. Vassilev-Missana, M., K. Atanassov, On an extremal problem related to the Delannoy number, Number Theory and Discrete Mathematics, Vol. 14, 2008, No. 2, 11-14.
21. Atanassov, K., Extension of an elementary equality, Number Theory and Discrete Mathematics, Vol. 14, 2008, No. 1, 13-15.
22. Atanassov, K., Inequalities related to ϕ, ψ and σ-functions (III), Number Theory and Discrete Mathematics, Vol. 14, 2008, No. 1, 16-24.
23. Atanassov, K., Generalized nets as tools for modelling of biological and medical processes. Bioautomation, Vol. 10, 2008, 41-58.
24. Sandor, J., K. Atanassov. On a modification of perfect numbers. Advanced Studies in Contemporary Mathematics, Vol. 17, 2008, No. 2, 249-255.
25. Atanassov, K. Intuitionistic fuzzy implication →^ε,η and intuitionistic fuzzy negation ¬^ε,η. Developments in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. 1, 2008, 1-10.
26. Dimitrov, D., K. Atanassov. On intuitionistic logic axioms and intuitionistic fuzzy implications and negations. Developments in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. 1, 2008, 61-68.
27. Atanassov K. and D. Dimitrov, On the negations over intuitionistic fuzzy sets. Part 1 Annual of “Informatics” Section Union of Scientists in Bulgaria Volume 1, 2008, 49-58.
28. Atanassov K. and S. Dantchev, Generalized nets having places with limited global capacities. Annual of “Informatics” Section Union of Scientists in Bulgaria Volume 1, 2008, 67-74.
29. Atanassov, K. Generalized nets having arcs with limited global capacities. Cybernetics and Information Technologies, Vol. 8, 2008, No. 3, 51-58.
    Ban, A., J. Kacprzyk and K. Atanassov. On de-I-fuzzyfication of intuitionistic fuzzy sets. Comptes Rendus de l’Academie bulgare des Sciences, Tome 61, 2008, No. 12, 1535-1540.
30. Atanassov, K. George Gargov (1947-1996) and intuitionistic fuzziness. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 6, 2008, 1-5.
31. Atanassov, K. On intuitionistic fuzzy implication and intuitionistic fuzzy negation ¬^ε. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 6, 2008, 6-19.
32. Vassilev, P., R. Parvathi, K. Atanassov. Note on intuitionistic fuzzy sets of p-th type. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 6, 2008, 43-50.
33. Atanassov, K. On a hierarchical operator over the generalized nets. Part. 2. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 6, 2008, 51-58.
34. Chountas, P., V. Tasseva, B. Kolev, K. Atanassov. Generalized net model of selection operation over intuitionistic fuzzy cube. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 6, 2008, 86-95.
35. Trifonov, T., K. Georgiev, K. Atanassov. Software for modelling with generalized nets. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 6, 2008, 96-110.
36. Chakarov, V., A. Shannon, J. Sorsich, K. Atanassov. Generalized net model of the endocrine system. Comptes Rendus de l’Academie bulgare des Sciences, Tome 61, 2008, No. 6, 705-712.
37. Sandor, J., K. Atanassov. On (m,n)-super-perfect numbers. Advanced Studies in Contemporary Mathematics, Vol. 16, 2008, No. 1, 23-30.
38. Atanassov, K., E. Szmidt, J. Kacprzyk, On intuitionistic fuzzy multi-dimensional sets. Issues in Intuitionistic Fuzzy Sets and Generalized Nets. Vol. 7, 2008, 1-6.
39. Sotirova, E., K. Atanassov, V. Tasseva. Algorithms for constructing of generalized nets on the base of case study ideology. Advanced Studies in Contemporary Mathematics, Vol. 16, 2008, No. 1, 83-103.
40. Shannon, A., K. Atanassov, E. Sotirova. Generalized nets for the reliability and standardization of assessments. Raffles Technical Report, No. 137, May 2008, 1-6.
41. Chakarov, V., A. Shannon, K. Atanassov. Generalized net model of a human stress reaction. Bioautomation, Vol. 9, 2008, 69-78.
42. Atanassov, K., Intuitionistic fuzzy sets and interval-valued fuzzy sets. Set-valued Mathematics and Applications, Vol. 1, No. 1, June 2008, 53-61.
43. Parvathi, R., K. Atanassov. Grayscale morphological operators on intuitionistic fuzzy sets of second type. Advances in Fuzzy Sets and Systems, Vol. 3, No. 1, 2008, 87-97.
44. Atanassov, K., My personal view on intuitionistic fuzzy sets theory. In: H. Bustince et al. (Eds.) Fuzzy Sets and Their Extensions: Representation, Aggregation and Models, Studies in Fuzziness and Soft Computing, Vol. 220, Springer, Berlin, 2008, 25-46.

2007

1. Chakarov, V., A. Shannon, K. Atanassov. Generalized net model with intuitionistic fuzzy estimations of human nervous system. Notes on Intuitionistic Fuzzy Sets, Vol. 13, 2007, No. 3, 17-23.
2. Atanassov, K. Remark on intuitionistic fuzzy numbers. Notes on Intuitionistic Fuzzy Sets, Vol. 13, 2007, No. 3, 29-32.
3. Atanassov, K. On some Pascal’s triangles. Part 4. Notes on Number Theory and Discrete Mathematics, Vol. 13, 2007, No. 4, 11-20.
4. Atanassov, K. On some properties of intuitionistic fuzzy operator X_a,b,c,d,e,f. Notes on Intuitionistic Fuzzy Sets, Vol. 13, 2007, No. 2, 42-47.
5. Atanassov, K. Some properties of the operators from one type of intuitionistic fuzzy modal operators. Advanced Studies on Contemporary Mathematics, Vol. 15, 2007, No. 1, 13-20.
6. Atanassov, K., S. Sotirov, A. Antonov. Generalized net model for parallel optimization of feed-forward neural network. Advanced Studies on Contemporary Mathematics, Vol. 15, 2007, No. 1, 109-119.
7. Karunambigai, M.G., P. Rangasamy, K. Atanassov, N. Palaniappan. An intuitionistic fuzzy graph method for finding the shortest paths in networks. In:- Theoretical Advances and Applications Fuzzy Logic and Soft Computing (O. Castill, et. al., Editors), Springer, Berlin, 2007, 3-10.
8. Atanassov, K. Algebraic Aspect of the Generalized Net Theory. V. Issues in Intuitionistic Fuzzy Sets and Generalized Nets. Vol. 5. Warsaw School of Information Technology, Warsaw 2007, 1-9.
9. Shannon, A., D. Orozova, E. Sotirova, K. Atanassov, M. Krawczak, P. Melo-Pinto, T. Kim. Generalized Net Model of E-Learning Evaluation with Intuitionistic Fuzzy Estimations. Issues in Intuitionistic Fuzzy Sets and Generalized Nets. Vol. 5. Warsaw School of Information Technology, Warsaw 2007, 46-53.
10. Vassilev-Missana, M., K. Atanassov. A new point of view on perfect and other similar numbers. Advanced Studies on Contemporary Mathematics, Vol. 15, 2007, No. 2, 153-169.
11. Chakarov, V., K. Atanassov, A. Shannon, Generalized net model of auditory information processing. Journal of Advanced Computational Intelligence and Intelligent Informatics, Vol. 11, No. 5, 2007, 452-456.
12. Atanassov, K. Definitions and properties of the generalized nets. A Survey of Generalized Nets (E.Y.H. Choy, M. Krawczak, A. Shannon, E. Szmidt, Eds.), Raffles KvB Monograph No. 10, Sydney, 2007, 7-77.
13. Chakarov, V., K. Atanassov, A. Shannon. Generalized net model of the human muscular-sceletal system. A Survey of Generalized Nets (E.Y.H. Choy, M. Krawczak, A. Shannon, E. Szmidt, Eds.), Raffles KvB Monograph No. 10, Sydney, 2007, 127-140.
14. Shannon, A., B. Riečan, D. Orozova, E. Sotirova, I. Petrounias, K. Atanassov, M. Krawczak, P. Melo-Pinto, T. Kim. A generalized net model of a training system. A Survey of Generalized Nets (E.Y.H. Choy, M. Krawczak, A. Shannon, E. Szmidt, Eds.), Raffles KvB Monograph No. 10, Sydney, 2007, 198-206.
15. Chountas, P., K. Atanassov. On intuitionistic fuzzy sets over universes with hierarchical structures. Notes on Intuitionistic Fuzzy Sets, Vol. 13, 2007, No. 1, 52-56.
16. Atanassov, K. On some Pascal’s triangles. Part 1. Notes on Number Theory and Discrete Mathematics, Vol. 13, 2007, No. 1, 31-36.
17. Atanassov, K. On some Pascal’s triangles. Part 2. Notes on Number Theory and Discrete Mathematics, Vol. 13, 2007, No. 2, 10-14.
18. Atanassov, K. On some Pascal’s triangles. Part 3. Notes on Number Theory and Discrete Mathematics, Vol. 13, 2007, No. 3, 20-26.
19. Atanassov K., Remark on Jacobsthal numbers. Notes on Number Theory and Discrete Mathematics, Vol. 13, 2007, No. 3, 36.
20. Shannon, A., G. Gluhchev, K. Aanassov, S. Hadjitodorov, V. Vassilev. A generalized net model of biometric-based access permission. Comptes Rendus de l’Academie bulgare des Sciences, Tome 60, 2007, No. 11, 1157-1162.
21. Atanassov, K., O. Boumbarov, G. Gluhchev, S. Hadjitodorov, A. Shannon, V. Vassilev. A generalized net model of biometric access-control system. Proc. of the 9th WSEAS Int. Conf. on Automatic Control, Modeling & Simulation, Istanbul, 27-29 May 2007, 77-80.
22. Todorova, L., K. Atanassov, E. Szmidt, J. Kacprzyk. Intuitionistic fuzzy generalized net for decision making with Voronoi’s diagrams. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 4 (K. Atanassov, J. Kacprzyk, M. Krawczak and E.Szmidt, Eds.), Wydawnictwo WSISiZ, Warszawa, 2007, 15-26.
23. Atanassov, K. Generalized nets models in systems theory. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 4 (K. Atanassov, J. Kacprzyk, M. Krawczak and E.Szmidt, Eds.), Wydawnictwo WSISiZ, Warszawa, 2007, 35-42.
    Atanassov, K., S. Dantchev, Generalized net realization of Kolmogorov’s algorithm. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 4 (K. Atanassov, J. Kacprzyk, M. Krawczak and E.Szmidt, Eds.), Wydawnictwo WSISiZ, Warszawa, 2007, 65-74.

2006

1. Mengov G., K. Georgiev, S. Pulov, T. Trifonov, K. Atanassov, Fast computation of a gated dipole field. Neural Networks, Vol. 19, 2006, 1636-1647.
2. Shannon, A., E. Sotirova, K. Atanassov, M. Krawczak, P. Melo-Pinto, T. Kim, L.C. Jang, Dong-Jin Kang, S.H. Rim. A note on generalized net model of e-learning evaluation associated with intuitionistic fuzzy estimations. International Journal of Fuzzy Logic and Intelligent Systems Vol. 6, No. 1, 2006, 6-9.
3. Atanassov, K., B. Riečan, On two operations over intuitionistic fuzzy sets. Journal of Applied Mathematics, Statistics and Informatics, Vol. 2 2006, No. 2, 145-148.
4. Atanassov, K. On a hierarchical operator over the generalized nets. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 3, 2006, 29-34.
5. Atanassov, K. On two sets of intuitionistic fuzzy negations. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 3, 2006, 35-39.
6. Atanassov, K. A new direction of Fibonacci sequence modification. Notes on Number Theory and Discrete Mathematics, Vol. 12, 2006, No. 1, 25-32.
7. Atanassov, K. Note on ϕ, ψ and σ-functions. Notes on Number Theory and Discrete Mathematics, Vol. 12, 2006, No. 4, 23-24.
8. Atanassov, K. The most general form of one type of intuitionistic fuzzy modal operators. Notes on Intuitionistic Fuzzy Sets, Vol. 12, 2006, No. 2, 36-38.
9. Riečan, B. and K. Atanassov. n-extraction operation over intuitionistic fuzzy sets. Notes in Intuitionistic Fuzzy Sets, Vol. 12, 2006, No. 4, 9-11.
10. Shannon A. and K. Atanassov. On a generalization of intuitionistic fuzzy graphs. Notes on Intuitionistic Fuzzy Sets, Vol. 12, 2006, No. 1, 24-29.
11. Riečan, B. and K. Atanassov. A set-theoretical operation over intuitionistic fuzzy sets. Notes on Intuitionistic Fuzzy Sets, Vol. 12, 2006, No. 2, 24-25.
12. Atanassov, K., B. Kolev. On an intuitionistic fuzzy implication from a probabilistic type. Advanced Studies on Contemporary Mathematics, Vol. 12, 2006, No. 1, 111-116.
13. Atanassov, K. A new intuitionistic fuzzy implication from a modal type. Advanced Studies on Contemporary Mathematics, Vol. 12, 2006, No. 1, 117-122.
14. Atanassov, K., On some intuitionistic fuzzy implications. Comptes Rendus de l’Academie bulgare des Sciences, Tome 59, 2006, No. 1, 19-24.
15. Atanassov, K., P. Chountas, B. Kolev, E. Sotirova. Generalized net model of an expert system with temporal components. Advanced Studies on Contemporary Mathematics, Vol. 12, 2006, No. 2, 255-289.
16. Atanassov, K., M. Vassilev-Missana. On one of Murthy-Ashbacher’s conjectures related to Euler’s totient function. Proceedings of the Jangjeon Mathematical Society, Vol. 9, 2006, No. 1 47-50.
17. Atanassov, K., E. Sotirova, D. Orozova. Generalized net model of an expert system with frame-type data bases. Proceedings of the Jangjeon Mathematical Society, Vol. 9, 2006, No. 1 91-101.
18. Atanassov, K., T. Trifonov. Two new intuitionistic fuzzy implications. Advanced Studies on Contemporary Mathematics, Vol. 13, 2006, No. 1, 69-74.
19. Atanassov, K., M. Vassilev-Missana. On explicit formulae for prime and twin prime numbers. Italian Journal of Pure and Applied Mathematics, No. 20, 2006, 103-120.
20. Kolev, B., K. Atanassov, P. Chountas, I. Petrounias. A mediation approach towards in intuitionistic fuzzy mediator. Proc. of Eleventh International Conf. IPMU 2006, Paris, July 2-7, 2006, 2355-2362.
21. Atanassov, K., On intuitionistic fuzzy negations and De Moragn Laws. Proc. of Eleventh International Conf. IPMU 2006, Paris, July 2-7, 2006, 2399-2404.
22. Atanassov, K., On eight new intuitionistic fuzzy implications. Proc. of 3rd Int. IEEE Conf. “Intelligent Systems” IS06, London, 4-6 Sept. 2006, 741-746.
23. Shannon, A., D. Langova-Orozova, E. Sotirova, I. Petrounias, K. Atanassov, M. Krawczak, P. Melo-Pinto, T. Kim, V. Tasseva. A generalized net model of the separate information flow connections within a university. Proc. of 3rd Int. IEEE Conf. “Intelligent Systems” IS06, London, 4-6 Sept. 2006, 760-763.
24. Atanassov, K., Intuitionistic fuzzy sets and interval-valued fuzzy sets. First Int. workshop on Intuitionistic Fuzzy Sets, Generalized Nets and Knowledge Engineering, London, 6-7 Sept. 2006, 1-7.
25. Atanassov, K., D. Peneva, V. Tasseva, E. Sotirova, D. Orozova. Generalized net model of an expert system with frame-type data bases with intuitionistic fuzzy estimations. First Int. workshop on Intuitionistic Fuzzy Sets, Generalized Nets and Knowledge Engineering, London, 6-7 Sept. 2006, 111-116.
26. Trifonov, T., K. Atanassov, On some intuitionistic properties of intuitionistic fuzzy implications and negations. In:- Computational Intelligence, Theory and Applications. Springer, Berlin, 2006, 151-158.
27. Atanassov, K. On intuitionistic fuzzy negations. In:- Computational Intelligence, Theory and Applications. Springer, Berlin, 2006, 159-167.
28. Chountas, P., E. Sotirova, B. Kolev, K. Atanassov. On intuitionistic fuzzy expert systems with temporal components. In:- Computational Intelligence, Theory and Applications. Springer, Berlin, 2006, 241-249.
29. Atanassov, K., S. Sotirov. Optimization of a neural network of self-organizing maps type with time-limits by a generalized net. Advanced Studies on Contemporary Mathematics, Vol. 13, 2006, No. 2, 213-220.
30. Sotirova, E., K. Atanassov, P. Chountas. Generalized nets as tools for modelling of open, hybrid and closed systems: an example with an expert system. Advanced Studies on Contemporary Mathematics, Vol. 13, 2006, No. 2, 221-234.
31. Christova, N., V. Tasseva, D. Peneva, K. Atanassov. Generalized nets as tools for modelling and simulation of open and hybrid systems. International Mediterranean Modelling Multiconference 2006, Barcelona, Oct. 4-6, 2006, 245-250.

2005

1. Vassilev, P., M. Vassilev-Missana, K. Atanassov. On some new conjectures equivalent to the strong Goldbach’s conjecture. Proceedings of the Jangjeon Mathematical Society, Vol. 8, 2005, No. 2, 123-131; Corrigendum – in Vol. 9, 2006, No. 2, 233.
2. Shannon, A., K. Atanassov, V. Chakarov, Generalized net model of the gastrointestinal system of the human body. Advanced Studies on Contemporary Mathematics, Vol. 10, 2005, No. 2, 101-110.
3. Minchev, Z., K. Atanassov, On the possibility for generalized nets modelling of modular robotic system. Advanced Studies on Contemporary Mathematics, Vol. 10, 2005, No. 2, 169-174.
4. Shannon, A., D. Orozova-Langova, E. Sotirova, J. Trelewicz, K. Atanassov, P. Melo-Pinto, T. Kim, Generalized net model of a training system. Advanced Studies on Contemporary Mathematics, Vol. 10, 2005, No. 2, 175-179.
5. Orozova D., T. Kim, K. Atanassov, E-learning dynamic assessment with fuzzy estimations. Advanced Studies on Contemporary Mathematics, Vol. 10, 2005, No. 2, 213-218.
6. Atanassov, K., V. Tasseva, E. Szmidt, J. Kacprzyk. On the geometrical interpretations of the intuitionistic fuzzy sets. Issues in the Representation and Processing of Uncertain Imprecise Information: Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets, and Related Topics (K. Atanassov, J. Kacprzyk, M. Krawczak and E. Szmidt, Eds.) Akademicka Oficyna Wydawnictwo EXIT, Warszawa, 2005, 11-24.
7. Hadjitodorov, S., E. Szmidt, K. Atanassov, A. Shannon, G. Gluhchev, V. Vasilev. Generalized net models in speaker verification and identification with intuitionistic fuzzy estimations. Issues in the Representation and Processing of Uncertain Imprecise Information: Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets, and Related Topics (K. Atanassov, J. Kacprzyk, M. Krawczak and E. Szmidt, Eds.) Akademicka Oficyna Wydawnictwo EXIT, Warszawa, 2005, 127-140.
8. Kolev B., P. Chountas, K. Atanassov, I. Petrounias. Representing uncertainty and ignorance in probabilistic data using intuitionistic fuzzy relational data model. Issues in the Representation and Processing of Uncertain Imprecise Information: Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets, and Related Topics (K. Atanassov, J. Kacprzyk, M. Krawczak and E. Szmidt, Eds.) Akademicka Oficyna Wydawnictwo EXIT, Warszawa, 2005, 198-208.
9. Melo-Pinto, P., T. Kim, K. Atanassov, E. Sotirova, A. Shannon, M. Krawczak. Generalized net model of e-learning evaluation with intuitionistic fuzzy estimations. Issues in the Representation and Processing of Uncertain Imprecise Information: Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets, and Related Topics (K. Atanassov, J. Kacprzyk, M. Krawczak and E. Szmidt, Eds.) Akademicka Oficyna Wydawnictwo EXIT, Warszawa, 2005, 241-249.
10. Chakarov V., A. Shannon, K. Atanassov. Generalized net model of human hematopoetic system. International Electronic Journal “Bioautomation”, Vol. 2, 2005, 107-114.
11. Atanassov, K., On some types of intuitionistic fuzzy negations. Notes on Intuitionistic Fuzzy Sets, Vol. 11, 2005, No. 4, 170-172.
12. Atanassov, K., T. Trifonov, Towards combining two kinds of intuitionistic fuzzy sets, Notes on Intuitionistic Fuzzy Sets, Vol. 11, 2005, No. 2, 1-11.
13. Pasi, G., K. Atanassov, R. Yager, On intuitionistic fuzzy interpretations of elements of utility theory. Part 1, Notes on Intuitionistic Fuzzy Sets, Vol. 11, 2005, No. 3, 62-65.
14. Chakarov, V., K. Atanassov, V. Tasseva, M. Matveev, E. El-Darzi, P. Chountas, I. Petrounias. Generalized net model for some basic clinical administrative decision making. First European Conference on Health Care Modelling and Computation Craiova, Aug. 31 – Sept., 2 2005, 72-78.
15. Chakarov, V., K. Atanassov, V. Tasseva. Application of the generalized nets in medicine (Edemas). First European Conference on Health Care Modelling and Computation Craiova, Aug. 31 – Sept., 2 2005, 79-86.
16. Tasseva, V., K. Atanassov, M. Matveev, E. El-Darzi, P. Chountas, F. Gorunescu. Modelling the flow of patient through intensive care unit using generalized nets. First European Conference on Health Care Modelling and Computation Craiova, Aug. 31 – Sept., 2 2005, 290-299.
17. Atanassov K., M. Matveev, A. Shannon, V. Tasseva. Information model of workflow and resources in general hospital. Proc. of Int. Conf. “Advanced Information and Telemedicine Technologies for Health” AITTH’2005, Minsk, 8-10 Nov. 2005, Vol. 1, 42-46.
18. Atanassov, K. Answer to D. Dubois, S. Gottwald, P. Hajek, J. Kacprzyk and H. Prade’s paper “Terminological difficulties in fuzzy set theory – the case of “intuitionistic fuzzy sets”” Fuzzy Sets and Systems, Vol. 156, 2005, No. 3, 496-499.
19. Atanassov, K. On some intuitionistic fuzzy negations. Proc. of the First Int. Workshop on IFSs, Banska Bystrica, 22 Sept. 2005. Notes on Intuitionistic Fuzzy Sets, Vol. 11, 2005, No. 6, 13-20.
20. Vassilev-Missana, V., K. Atanassov. Remarks on some of the Smarandache’s problems. Part 2. Scientia Magna, Vol. 1, 2005, No. 2, 1-26.
21. Atanassov K. Intuitionistic fuzzy implications and Modus Ponens, Notes on Intuitionistic Fuzzy Sets, Vol. 11, 2005, No. 1, 1-5.
22. Atanassov K. On one type of intuitionistic fuzzy modal operators. Notes on Intuitionistic Fuzzy Sets, Vol. 11, 2005, No. 5, 24-28.
23. Atanassov K. On four Smarandache’s problems. Notes on Number Theory and Discrete Mathematics, Vol. 11, 2005, No. 1, 1-6.
24. Atanassov K. On two new 2-Fibonacci sequences. Notes on Number Theory and Discrete Mathematics, Vol. 11, 2005, No. 4, 12-16.
25. Atanassov, K., T. Trifonov. On a new intuitionistic fuzzy implication of Godel’s type. Proceedings of the Jangjeon Mathematical Society, Vol. 8, 2005, No. 2, 147-152.
26. Atanassov, K., G. Pasi and R. Yager. Intuitionistic fuzzy interpretations of multi-criteria multi-person and multi-measurement tool decision making. International Journal of Systems Science, Vol. 36, 2005, No. 14, 859-868.
27. Shannon, A., D. Langova-Orozova, E. Sotirova, K. Atanassov, P. Melo-Pinto, T. Kim. Generalized net model for adaptive electronic assessment, using intuitionistic fuzzy estimations. In: – Computational Intelligence, Theory and Applications (B. Reusch, Ed.), Springer, Berlin, 2005, 291-297.

2004

1. Atanassov, K., B. Papadopoulos, A. Syropoulos. An application of the theory of intuitionistic fuzzy multigraphs. Mathware & Soft Computing, Vol. 11 (2004), No. 1, 45-49.
2. Gluhchev G., K. Atanassov, S. Hadjitodorov, E. Szmidt. Automatic Document processing. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 2 (K. Atanassov, J. Kacprzyk and M. Krawczak, Eds.), Wydawnictwo WSISiZ, Warszawa, 2004, 5-16.
3. Toleva, S., K. Atanassov, T. Fukuda. A generalized net model of an industrial robot. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 2 (K. Atanassov, J. Kacprzyk and M. Krawczak, Eds.), Wydawnictwo WSISiZ, Warszawa, 2004, 29-36.
4. Sorsich, J., K. Atanassov, A. Shannon, E. Szmidt, J. Kacprzyk. Generalized net model of the interconnection effect of the neurological, endocrine and cardiovascular systems on metabolism in human body. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 2 (K. Atanassov, J. Kacprzyk and M. Krawczak, Eds.), Wydawnictwo WSISiZ, Warszawa, 2004, 47-52.
5. Trifonov, T., K. Atanassov. On some generalized net models of multiagent systems (Part 1). Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 2 (K. Atanassov, J. Kacprzyk and M. Krawczak, Eds.), Wydawnictwo WSISiZ, Warszawa, 2004, 59-66.
6. Chakarov, V., K. Atanassov, A. Shannon. Principal generalized net model of an excretory system. Proceedings of the Fifth Int. Workshop on Generalized Nets, Sofia, 10 November 2004, 13-18.
7. Shannon A., D. Langova-Orozova, E. Sotirova, I. Petrounias, K. Atanassov, N. Ralev, P. Melo-Pinto, T. Kim Generalized net model of a university classes schedule. Advanced Studies on Contemporary Mathematics, Vol. 8, 2004, No. 1, 23-34.
8. Gochev V., K. Atanassov, Over generalized net reprersentation of one type of fuzzy Petri nets. Advanced Studies on Contemporary Mathematics, Vol. 8, 2004, No. 1, 59-64.
9. Atanassov K. On an arithmetic function. Advanced Studies on Contemporary Mathematics, Vol. 8, 2004, No. 2, 177-182.
10. Shannon A. D. Langova-Orozova, E. Sotirova, I. Petrounias, K. Atanassov, P. Melo-Pinto, T. Kim, Generalized net model of information flows in intranet in an abstract university. Advanced Studies on Contemporary Mathematics, Vol. 8, 2004, No. 2, 183-192.
11. Szmidt E., J. Kacprzyk, K. Atanassov, A generalized net model of a process of an abstract optimization, Issues in Intuitionistic Fuzzy Sets and Generalized Nets (K. Atanassov, J. Kacprzyk and M. Krawczak, Eds.), Wydawnictwo WSISiZ, Warszawa, 2004, 5-10.
12. Shannon A., E. Sotirova, K. Atanassov, M. Krawczak, N. Ralev, A generalized net model of the informational pocess in an abstract university. Issues in Intuitionistic Fuzzy Sets and Generalized Nets (K. Atanassov, J. Kacprzyk and M. Krawczak, Eds.), Wydawnictwo WSISiZ, Warszawa, 2004, 41-47.
13. Gluhchev G., K. Atanassov, S. Hadjitodorov, V. Vasilev, A. Shannon, Face recognition via generalized nets. Issues in Intuitionistic Fuzzy Sets and Generalized Nets (K. Atanassov, J. Kacprzyk and M. Krawczak, Eds.), Wydawnictwo WSISiZ, Warszawa, 2004, 57-60.
14. Atanassov K., Remarks on intuitionistic fuzzy set theory. Soft Computing Foundations and Theoretical Aspects (K. Atanassov, O. Hryniewicz, J. Kacprzyk, Eds.), Academicka Oficyna Wydawnicza EXIT, Warszawa, 2004, 1-17.
15. Atanassov K., Generalized nets as tools for modelling, optimization and simulation in the area of the Artificial Intelligence. Soft Computing Foundations and Theoretical Aspects (K. Atanassov, O. Hryniewicz, J. Kacprzyk, Eds.), Academicka Oficyna Wydawnicza EXIT, Warszawa, 2004, 19-51.
16. Cornelis C., E. Kerre, K. Atanassov, Application of extended modal operators as tool for constructing inclusion indicators over intuitionistic fuzzy sets. Soft Computing Foundations and Theoretical Aspects (K. Atanassov, O. Hryniewicz, J. Kacprzyk, Eds.), Academicka Oficyna Wydawnicza EXIT, Warszawa, 2004, 133-142.
17. Shannon A., D. Langova-Orozova, E. Sotirova, I. Petrounias, K. Atanassov, M. Krawczak, P. Melo-Pinto, S. Melliani, T. Kim, Generalized net model of intranet in an abstract university. Proceedings of the Jangjeon Mathematical Society, Vol. 7, 2004, No. 1, 81-88.
18. Shannon A., E. Szmidt, E. Sotirova, I. Petrounias, J. Kacprzyk, K. Atanassov, M. Krawczak, P. Melo-Pinto, S. Melliani, T. Kim, Intuitionistic fuzzy estimation and generalized net model of e-learning within a university local network. Advanced Studies on Contemporary Mathematics, Vol. 9, 2004, No. 1, 41-46.
19. Nikolova M., K. Atanassov, V. Vasilev, Generalized nets as tools for optimization of real processes. Advanced Studies on Contemporary Mathematics, Vol. 9, 2004, No. 1, 47-62.
20. Atanassov, K. New operators over intuitionistic fuzzy sets. Proc. of IPMU’04, Perugie, Italy, June 2004, Vol. 2, 1383-1387.
21. Christova N., K. Atanassov, Generalized net model of storehouse processes: a principal scheme, Proceedings of SIMS’2004 (B. Elmegaard, J. Sporring, K. Erleben, K. Sornsen, Eds.), Copenhagen, 23-24 Sept. 2004, 351-355.
22. Atanassov K., G. Gluhchev, S. Hadjitodorov, M. Savov, E. Szmidt, Signature based person verification: a generalized net model. Current Issues in Data and Knowledge Engineering (B. de Baets, R. De Caluwe, G. De Tre, J. Fodor, J. Kacprzyk and S. Zadrozny, Eds.), Academicka Oficyna Wydawnicza EXIT, Warszawa, 2004, 33-41.
23. Atanassov K., E. Koycheva, E. Szmidt, V. Taseva. Generalized nets as tools for control and optimization of real processes. Current Issues in Data and Knowledge Engineering (B. de Baets, R. De Caluwe, G. De Tre, J. Fodor, J. Kacprzyk and S. Zadrozny, Eds.), Academicka Oficyna Wydawnicza EXIT, Warszawa, 2004, 42-54.
24. Shannon A., E. Kerre, E. Szmidt, E. Sotirova, I. Petrounias, J. Kacprzyk, K. Atanassov, M. Kravczak, P. Melo-Pinto, P. Georgiev, S. Melliani, T. Kim, Intuitionistic fuzzy estimation and generalized net model of e-learning within a university local network., Proceedings of Second International IEEE Conference Intelligent Systems, Varna, 22-24 June 2004, Vol. 2, 423-426.
25. Pasi G., Yager, K. Atanassov. Intuitionistic fuzzy graph interpretations of multi-person multi-criteria decision making: generalized net approach. Proceedings of Second International IEEE Conference Intelligent Systems, Varna, 22-24 June 2004, Vol. 2, 434-439.
26. Shannon A., K. Atanassov. On intuitionistic fuzzy multigraphs and their index matrix interpretations. Proceedings of Second International IEEE Conference Intelligent Systems, Varna, 22-24 June 2004, Vol. 2, 440-443.
27. Atanassov K., E. Sotirova, On Global operator G₂₁ defined over generalized nets. Cybernetics and Information Technologies, Vol. 4, 2004, No. 1, 30-40.
28. Atanassov, K. On a new formula for the n-th prime number. Notes on Number Theory and Discrete Mathematics, Vol. 10, 2004, No. 1, 24.

2003

1. Atanassov K. A relation between the prime and the Fibonacci numbers. Advanced Studies on Contemporary Mathematics, Vol. 6, 2003, No. 1, 53-56.
2. Atanassov K., R. Knott, K. Ozeki, A. Shannon, L. Szalay, Inequalities among related pairs of Fibonacci numbers, The Fibonacci Quarterly Vol. 41 (2003), No. 1, 20-22.
3. Hadjitodorov S., K. Atanassov, P. Mitev, A. Shannon, G. Gluhchev, V. Vasilev, Generalized net representing the process of speaker classification – identification and verification. Advanced Studies on Contemporary Mathematics, Vol. 6, 2003, No. 2, 129-140.
4. Atanassov K. Temporal intuitionistic fuzzy sets (review and new results) Proc. of the Thirty Second Spring of the Union of Bulg. Mathematicians, Sunny Beach, April, 5-8, 2003, 79-88.
5. Atanassov K., G. Gluhchev, S. Hadjitodorov, A. Shannon, V. Vasilev Application of generalized nets in biometrics. Comptes Rendus de l’Academie bulgare des Sciences, Tome 56, 2003, No. 5, 13-18.
6. Atanassov K., N. Nikolov Intuitionistic fuzzy generalized nets: definitions, properties, applications. In:- Systematic Organization of Information in Fuzzy Systems (P. Melo-Pinto, H.-N. Teodorescu and T. Fukuda, Eds.), IOS Press, Amsterdam, 2003, 161-175.
7. Atanassov K. An extremal problem related to Fibonacci numbers. Advanced Studies on Contemporary Mathematics, Vol. 7, 2003, No. 1, 87-92.
8. Gochev V., K. Atanassov, P. Chountas A generalized net representing the functioning and the results of the work of fuzzy Petri nets. Proc. of the 10th ISPE Int. Conf. on Concurrent Engineering “Advanced Design, Production and Management Systems”, 26-30 July 2003, Madeira, 1009-1012.
9. Melo Pinto P., K. Atanassov A generalized net model of the system “object-environment”. Proc. of the 10th ISPE Int. Conf. on Concurrent Engineering “Advanced Design, Production and Management Systems”, 26-30 July 2003, Madeira, 1053-1056.
10. Pasi G., K. Atanassov, P. Melo Pinto, R. Yager, V. Atanassova Multi-person multi-criteria decision making: intuitionistic fuzzy approach and generalized net model. Proc. of the 10th ISPE Int. Conf. on Concurrent Engineering “Advanced Design, Production and Management Systems”, 26-30 July 2003, Madeira, 1073-1078.
11. Atanassov K., J. Kacprzyk, E. Szmidt, L. Todorova On separability of intuitionistic fuzzy sets. Proc. of the 10-th Int. Fuzzy Systems Assoc. World Congress, Istanbul, June 30 – July 2, 2003, In:- Lecture Notes in Artificial Intelligence, Vol. 2715: Fuzzy Sets and Systems – IFSA 2003, Springer, Berlin, 2003, 285-292.
12. Atanassov K., Intuitionistic fuzzy sets: Past, present and future. Proc. of the Third Conf. of the European Society for Fuzzy Logic and Technology EUSFLAT’ 2003, Zittau, 10-12 Sept. 2003, 12-19.
13. Cornelis C., K. Atanassov, E. Kerre, Intuitionistic fuzzy sets and interval-valued fuzzy sets: a critical comparison. Proc. of the Third Conf. of the European Society for Fuzzy Logic and Technology EUSFLAT’ 2003, Zittau, 10-12 Sept. 2003, 159-163.
14. Atanassov K., G. Pasi, R. Yager, V. Atanassova. Intuitionistic fuzzy graph interpretations of multi-person multi-criteria decision making. Proc. of the Third Conf. of the European Society for Fuzzy Logic and Technology EUSFLAT’ 2003, Zittau, 10-12 Sept. 2003, 177-182.
15. Atanassov K., E. Djakov, J. Alexieva, T. Trifonov, G. Jones, A generalized net model of a material processing reactor equipped wuth chromatic monitoring and control based on intuitionistic fuzzy evaluation of the chromaticity. Proc. of the Third Conf. of the European Society for Fuzzy Logic and Technology EUSFLAT’ 2003, Zittau, 10-12 Sept. 2003, 214-217.
16. Gluhchev G., K. Atanassov, S. Hadjitodorov, E. Szmidt, A. Shannon, Intuitionistic fuzzy generalized net model of the process of handwriting analysis. Proc. of the Third Conf. of the European Society for Fuzzy Logic and Technology EUSFLAT’ 2003, Zittau, 10-12 Sept. 2003, 218-222.
17. Mengov G., S. Pulov, K. Atanassov, K. Georgiev, T. Trifonov, Modelling neural signals with a generalized net. Advanced Studies on Contemporary Mathematics, Vol. 7, 2003, No. 2, 155-166.
18. Atanassov, K. A new intuitionistic fuzzy modal operator. Notes on Intuitionistic Fuzzy Sets, Vol. 9 (2003), No. 2, 56-60.
19. Atanassova, V., A. Shannon, K. Atanassov. Sets of extensions of the Fibonacci sequence. Comptes Rendus de l’Academie bulgare des Sciences, Tome 56, 2003, No. 9, 9-12.

2002

1. Chountas, P., I. Petrounias, K. Atanassov, V. Kodogiannis and E. El-Darzi. Representation of temporal unawareness. Advances in Information Systems (T. Yakhno, Ed.). In:- Lecture Notes in Computer Science, Vol. 2457, 2002, Springer, Berlin, 21-30.
2. Chountas, P., I. Petrounias, K. Atanassov, V. Kodogiannis and E. El-Darzi. Representation & querying of temporal conflict. Proc. of FQAS’2002 (T. Andreasen et al. Eds.). In:- Lecture Notes in Artificial Intelligence, Vol. 2522, 2002, Springer, Berlin, 112-123.
3. Trifonov, T., K. Atanassov. On some generalized net models of multiagent systems. Ministerului Educatiei si Cercetarii, Vol. VII, 2002. Nr. 37, 49-52.
   Hadjitodorov S., P. Mitev, K. Atanassov, G. Gluhchev, V. Vassilev, A. Shannon. A generalized net description for laryngeal pathology detection excluding the refusal from classification option. Cybernetics and Information Technologies, Vol. 2, 2002, Sofia, 27-32.
4. Vassilev-Missana, M., K. Atanassov. Modifications of the concept of perfect number. In: Proc. of the XXXI Spring Conf. of the Union of Bulgarin Mathematicians, Borovets, 3-6 April 2002, 221-225.
5. Atanassov K., Open problems in intuitionistic fuzzy sets theory. Proceedings of 6-th Joint Conf. on Information Sciences, Research Triangle Park (North Carolina, USA), March 8-13, 2002, 113-116.
6. Atanassov K., On the temporal intuitionistic fuzzy sets. Proc. of the Ninth International Conf. IPMU 2002, Vol. III, Annecy, France, July 1-5, 2002, 1833-1837.
7. Atanassov, K., Elements of intuitionistic fuzzy logics. Part II: Intuitionistic fuzzy modal logics. Advanced Studies on Contemporary Mathematics, Vol. 5, 2002, No. 1, 1-13.
8. Atanassov, K., Extension of one Sierpinski’s problem related to the triangular numbers. Advanced Studies on Contemporary Mathematics, Vol. 5, 2002, No. 1, 33-36.
9. Atanassov, K., Remark on an application of the intuitionistic fuzzy sets in number theory. Advanced Studies on Contemporary Mathematics, Vol. 5, 2002, No. 1, 49-55.
10. Atanassov, K. On the 17-th Smarandache’s problem. Smarandache Notions Journal, Vol. 13, No. 1-2-3, 2002, 124-125.
11. Atanassov, K. On the 46-th Smarandache’s problem. Smarandache Notions Journal, Vol. 13, No. 1-2-3, 2002, 126-127.
12. Shannon, A., K. Atanassov. Introduction to the difference calculus through the Fibonacci numbers. Int. J. Math. Educ. Sci. Technol., Vol. 33, 2002, No. 3, 456-465.
13. Atanassov K., Remark on Joseph Sandor and Florian Luca’s theorem. Comptes Rendus de l’Academie bulgare des Sciences, Tome 55, 2002, No. 10, 9-14.
14. Atanassov K., Converse factor: definition, properties and problems, Notes on Number Theory and Discrete Mathematics, Vol. 8, 2002, No. 1, 37-38.
15. Atanassov, K., A. Shannon. New variant of a Fibonacci plane Notes on Number Theory and Discrete Mathematics, Vol. 8, 2002, No. 3, 112-115.
16. Atanassov, K. Remark on a property of the intuitionictic fuzzy interpretation triangle. Notes on Intuitionistic Fuzzy Sets, Vol. 8 (2002), No. 1, 34-36.
17. Polikarov A., K. Atanassov. Refutability of physical theories: a new approach. Notes on Intuitionistic Fuzzy Sets, Vol. 8 (2002), No. 2, 37-41.
18. Atanassov K., G. Pasi and R. Yager. Intuitionistic fuzzy interpretations of multi-measurement tool multi-criteria decision making. Proceedings of the Sixth International Conference on Intuitionistic Fuzzy Sets (J. Kacprzyk and K. Atanassov, Eds.), Varna, 13-14 Sept. 2002, Notes on Intuitionistic Fuzzy Sets, Vol. 8 (2002), No. 3, 66-74.
19. Atanassov K., G. Pasi and R. Yager. Intuitionistic fuzzy interpretations of multi-person multi-criteria decision making. Proceedings of 2002 First International IEEE Symposium Intelligent Systems, Vol. 1, 115-119.
20. Aladjov H., K. Atanassov, A. Shannon, Generalized net model of temporal learning algorithm for artificial neural networks. Proceedings of 2002 First International IEEE Symposium Intelligent Systems, Vol. 1, 190-193.
21. Atanassov K., Restrictive factor: definition, properties and problems. Notes on Number Theory and Discrete Mathematics, Vol. 8, 2002, No. 4, 117-119.
22. Atanassov K. On index matrix interpretations of intuitionistic fuzzy graphs. Notes on Intuitionistic Fuzzy Sets, Vol. 8, 2002, No. 4, 73-78.

2001

1. Atanassov, K. Generalized nets as tools for modelling in the area of the artificial intelligence. Advanced Studies in Contemporary Mathematics, Vol. 3, 2001, No. 1, 21-42.
2. Atanassov, K., H. Aladjov. Generalized nets model of a new type of expert systems. Advanced Studies in Contemporary Mathematics, Vol. 3, 2001, No. 1, 43-58.
3. Atanassov, K. Remarks on the conjunctions, disjunctions and implications of the intuitionistic fuzzy logic Int. J. of Uncertainty, Fuzziness and Knowledge-Based Systems Vol. 9, 2001, No. 1, 55-65.
4. Atanassov, K. Remarks on Ivlin’s paper from an intuitionistic fuzzy logic point of view. Int. J. of Uncertainty, Fuzziness and Knowledge-Based Systems Vol. 9, 2001, No. 1, 67-70.
5. Atanassov, K., N. Nikolov, H. Aladjov. Remark on two operations over intuitionistic fuzzy sets. Int. J. of Uncertainty, Fuzziness and Knowledge-Based Systems Vol. 9, 2001, No. 1, 71-75.
6. Atanassov, K., N. Nikolov. Remark on the pseudo-fixed points of the intuitionistic fuzzy logic operators. Int. J. of Uncertainty, Fuzziness and Knowledge-Based Systems Vol. 9, 2001, No. 1, 77-80.
7. Aladjov, H., K. Atanassov. A generalized net for genetic algorithms learning. In: Proc. of the XXX Spring Conf. of the Union of Bulgarin Mathematicians, Borovets, 8-11 April 2001, 242-248.
8. Dimitrov, E., A. Schmietendorf, K. Atanassov. Netzbasierte Modelle fuer die Performance Analyse von multi-tier Client/Server Systemen. Tagungsband 2. Workshop Performance Engineering in der Softwareentwicklung (PE 2001), 26 April 2001, Univ. der Bundeswehr Muenchen, 21-31.
9. Sgurev, V., G. Gluhchev, K. Atanassov. Generalized net interpretation if information process in the brain. Proc. of the International Conference “Automatics and Informatics”, 31 May – 2 June 2001, Sofia, A-147-A-150.
10. Gluhchev, G., K. Atanassov, S. Hadjitodorov. Handwriting analysis via generalized nets. Proceedings of the international Scientific Conference on Energy and Information Systems and Technologies. Vol. III, Bitola, June 7-8, 2001, 758-763.
11. Langova-Orozova, D., H. Aladjov, K. Atanassov Generalized net for machine learning with current estimations. Advanced Studies in Contemporary Mathematics, Vol. 3, 2001, No. 2, 61-76.
12. Atanassov, K. Short remarks on two new types of generalized nets. Advanced Studies in Contemporary Mathematics, Vol. 3, 2001, No. 2, 77-84.
13. Atanassov, K. A new formula for the n-th prime number. Comptes Rendus de l’Academie bulgare des Sciences, Tome 54, 2001, No. 7, 5-6.
14. Atanassov, K., V. Radeva. On the abstract systems with properties. Advanced Studies in Contemporary Mathematics, Vol. 4, 2001, No. 1, 55-71.
15. Atanassov, K. Generalized net aspects of systems theory. Advanced Studies in Contemporary Mathematics, Vol. 4, 2001, No. 1, 73-92.
16. Atanassov, K., A. Ban, Triangular norm-based intuitionistic fuzzy propositional calculus. Notes on Intuitionistic Fuzzy Sets, Vol. 7 (2001), No. 2, 44-54.
17. Atanassov, K. On the possibility for intuitionistic fuzzy interpretations of modal logic axioms. Proceedings of the Fifth International Conference on Intuitionistic Fuzzy Sets (J. Kacprzyk and K. Atanassov, Eds.), Vol. 1; Notes on Intuitionistic Fuzzy Sets, Vol. 7 (2001), No. 3, 33-38.
18. Atanassov, K. Remarks on ϕ, σ, ψ and ρ functions. Notes on Number Theory and Discrete Mathematics, Vol. 7 (2001), No. 1, 1-3.
19. Atanassov, K. A theorem for basic operators over intuitionistic fuzzy sets. Mathware & Soft Computing, Vol. 8, 2001, 21-30.
20. Atanassov, K. On four intuitionistic fuzzy topological operators. Mathware & Soft Computing, Vol. 8, 2001, 65-70.
21. Atanassov K., On a conjecture concerning the harmonic series. Notes on Number Theory and Discrete Mathematics, Vol. 7, 2001, No. 3, 96-102.
22. Atanassov K., On one Jacobsthal’s inequality. Notes on Number Theory and Discrete Mathematics, Vol. 7, 2001, No. 4, 135-136.
23. Shannon A., G. Gluhchev, K. Atanassov, S. Hadjitodorov. Generalized net representing Process of Handwriting Identification. Cybernetics and Information Technologies, Vol. 1, 2001, Sofia, 71-80.
24. Atanassov, K., E. Dimitrov, P. Georgiev, S. Melliani, A. Schmietendorf. Generalized net models for performance analysis of multi-tier client- server applications (intuitionistic fuzzy approach). Proceedings of Int. AMSE Conf. “Communications, Signals & Systems”, Rabat, March 19-21 2001, Vol. 2, 369-376.
25. Atanassov, K., S. Melliani, S. Poryazov A generalized net model of users’ traffic in a telecommunication system with blocking. An intuitionistic fuzzy approach. Proceedings of Int. AMSE Conf. “Communications, Signals & Systems”, Rabat, March 19-21 2001, Vol. 2, 377-384.
26. Atanassov K., Remarks on some of the Smarandache’s problems. Part 1. Smarandache Notions Journal, Vol. 12, No. 1-2-3, Spring 2001, 82-98
27. Nikolov N., K. Atanassov. On the 107-th, 108-th and 109-th Smarandache’s problems. Smarandache Notions Journal, Vol. 12, No. 1-2-3, Spring 2001, 108-110.
28. Atanassov K. On the 20-th and the 21-st Smarandache’s problems. Smarandache Notions Journal, Vol. 12, No. 1-2-3, Spring 2001, 111-113.
29. Atanassov K. On four prime and coprime functions. Smarandache Notions Journal, Vol. 12, No. 1-2-3, Spring 2001, 122-125.
30. Atanassov K., H. Aladjov. A generalized net for machine learning of the process of mathematical problems solving (On an example with a Smarandache problem). Smarandache Notions Journal, Vol. 12, No. 1-2-3, Spring 2001, 338-343.

2000

1. Atanassov K. and A. Ban, On an operator over intuitionistic fuzzy sets. Comptes Rendus de l’Academie bulgare des Sciences, Tome 53, 2000, No. 5, 39-42.
2. Atanassov K., Nikolov N., Intuitionistic fuzzy interpretation of frame-structures. Notes on Intuitionistic Fuzzy Sets, Vol. 6 (2000), No. 1, 25-28.
3. Kim S.K., Atanassov K., Shannon A., Generalized nets in neurology: an example of mathematical modelling, Int. J. Math. Educ. Sci. Technol., 2000, Vol. 31, No. 2, 173-179.
4. Kirova-Yordanova Z., Atanassov K., Nikolov N., Nikolova N., Thermodynamic estimation of the environmental impact of mineral fertilizers production and use: Simulation modelling with generalized nets. Proceedings of ECOS’2000 (G. G. Hirs, Ed.), Twente, 2000, Part 3, 1329-1339.
5. Atanassov K., Temporal intuitionistic fuzzy relations. Proc. of the Fourt Int. Conf. on Flexible Query Answering Systems, FQAS’2000, Oct. 25-28, Warsaw. in: Advances in Soft Compution, Physica-Verlag, 2000, 153-160.
6. Atanassov K., S. Danchev, A. Shannon, Enumeration of integer k-gons with perimeter n. Notes on Number Theory and Discrete Mathematics, Vol. 6 (2000), No. 3, 88-99.
7. Atanassov K., Two theorems for intuitionistic fuzzy sets, Fuzzy Sets and Systems, Vol. 110, 2000, No. 2, 267-269.
8. Vassilev M., Atanassov K., Note on the Diophantine equation 2x² — 3y² = p, Smarandache Notions Journal, Vol. 11, No. 1-2-3, 2000, 64-68.
9. Aladjov H., Atanassov K., Remark on the 62-th Smarandache’s problem. Smarandache Notions Journal, Vol. 11, No. 1-2-3, 2000, 69-70. 2000, 64-68.

1999

1. Atanassov, K., D. Dimitrov. Intuitionistic fuzzy interpretation of information messages. Fuzzy Economic Review, Vol. 4, No. 1, May 1999, 71-81.
2. Kirova-Yordanova Z., Atanassov K., Nikolov N., Nikolova N., Comulative exergy cousumption of chemical processes: application of generalized nets (an intuitionistic fuzzy approach). Proceedings of Int. Conf. on Process Integration PI’99, Copenhagen, March 7-10, 1999, Vol. II, 66-68.
3. Kirova-Yordanova Z., Atanassov K., Nikolov N., Nikolova N., Exergy costing of chemical products life cycle by generalized nets. Proceedings of Int. Conf. on Process Integration PI’99, Copenhagen, March 7-10, 1999, Vol. II, 69-71.
4. Stefanova-Pavlova M., Atanassov K., Generalized net model of tool handling in flexible manufacturing systems. Modelling, Measurement & Control, Vol. 19, 1999, No. 1,2, 1-8.
5. Christov I., Dotsinsky I., Atanassov K., Georgiev P., Generalized net model of an electrocardiograph, Modelling, Measurement & Control, Vol. 60, 1999, No. 1,2, 1-8.
6. Atanassov K., Shannon A., Fibonacci planes and spaces, in (F. Howard, Ed.) Applications of Fibonacci Numbers, Vol. 8, Dordrecht, Kluwer, 1999, 43-46.
   Georgiev P., Atanassov K., Generalized net with tokens duration of “life”, Modelling, Measurement & Analysis, Vol. 4, 1999, No. 1,2, 1-5.
7. Aladjov H., Atanassov K., S.-K. Kim, Ok-B. Chang, Y.-S. Kim, Generalized net-based machine learning model of au intuitionistic fuzzy abstract system, Proc. of the 1999 IEEE International Fuzzy Systems Conf., Seoul, Aug. 22-25, 1999, Vol. II, 645-649.
8. Radeva V., Atanassov K., S.-K. Kim, Ok-B. Chang, Y.-S. Kim, Generalized net-models of an intuitionistic fuzzy abstract system, Proc. of the 1999 IEEE International Fuzzy Systems Conf., Seoul, Aug. 22-25, 1999, Vol. II, 1039-1044.

1998

1. Atanassov, K., G. Gargov. Elements of intuitionistic fuzzy logic. I. Fuzzy sets and Systems Vol. 95, 1998, No. 1, 39-52.
2. Atanassov, K. Remark on intuitionistic fuzzy logics. Fuzzy sets and Systems Vol. 95, 1998, No. 1, 127-129.
3. Atanassov K., Shannon A., Matrix-tertions and matrix-noitrets: exercises in mathematixal enrichment. Int. J. Math. Educ. Sci. Technol., 1998, Vol. 29, No. 6, 898-903.
4. Atanassov K., Temporal intuitionistic fuzzy graphs, Notes on Intuitionistic Fuzzy Sets, Vol. 4 (1998), No. 4, 59-61.
5. Vassilev-Missana M., K. Atanassov, Some representations related to n!, Notes on Number Theory and Discrete Mathematics, Vol. 4 (1998), No. 4, 148-153.
6. Atanassov K., On the 61-st, the 62-nd, and the 63-th Smarandache’s problems. Notes on Number Theory and Discrete Mathematics, Vol. 4 (1998), No. 4, 175-182.
7. Kirova-Yordanova Z., Atanassov K., Nikolov N., Nikolova N., Comulative exergy consumption of nitrogen fertilizer production: application of generalized nets, Proceedings of International Conference on Energy and Environment 98’ICEE, Shanghai, China, 4-6 May 1998, 70-77.
8. Atanassov K., Application of a combinatorial game-method in combinatorial geometry. Part 1: Combinatorial algorithms for solving variants of the Steiner-Rosenbaum’s problem, Advances in Modeling & Analysis, Vol. 2, 1998, Vol. 2, No. 1-2, 23-29.
9. Atanassov K., Application of a combinatorial game-method in combinatorial geometry. Part 2: Algorithm for grouping and transferring of points and a general algorithm, Advances in Modeling & Analysis, Vol. 2, 1998, Vol. 2, No. 1-2, 31-36.
10. Shannon A., K. Atanassov. Note on intuitionistic fuzzy logics. Acta Philosophica, Vol. 7, 1998, No. 1, 121-125.
11. Kirova-Yordanova Z., Atanassov K., Nikolov N., Nikolova N., Exergy costing of chemical products life cycle by generalized nets, Proceedings of Congress ECOS’98 “Efficiency, Cost, Optimization, Simulation and Environmental Aspects of Energy Systems and Processes”, Nancy, France, July 8-10, 1998, 499-505.
12. Atanassov K., Modifications of the Hadamard’s correctness principle towards its application to generalized nets. Advances in Modelling & Analysis, A, Vol. 33, 1998, No. 1-2, 11-18.
13. Atanassov K., Generalized nets with special priorities. Advances in Modelling & Analysis, A, Vol. 33, 1998, No. 1-2, 19-26.
14. Atanassov K., Intuitionistic fuzzy generalized nets with special priorities. Advances in Modelling & Analysis, A, Vol. 33, 1998, No. 1-2, 27-36.
15. Koshelev M., V. Kreinovich, B. Rachamreddy, H. Yasemis, K. Atanassov, Fundamental justification of intuitionistic fuzzy logic and interval-valued fuzzy methods. Proceedings of the Second International Conference on Intuitionistic Fuzzy Sets (J. Kacprzyk and K. Atanassov, Eds.), Vol. 1; Notes on Intuitionistic Fuzzy Sets, Vol. 4 (1998), No. 2, 42-46.
16. Kreinovich V., H. Nguyen, B. Wu, K. Atanassov, Fuzzy justification of heuristic methods in inverse problems and in numerical computations, with applications to detection of business cycles from fuzzy and intuitionistic fuzzy data. Proceedings of the Second International Conference on Intuitionistic Fuzzy Sets (J. Kacprzyk and K. Atanassov, Eds.), Vol. 2; Notes on Intuitionistic Fuzzy Sets, Vol. 4 (1998), No. 2, 47-56.
17. Atanassov K., Anthony Shannon’s research on Fibonacci-like objects. Notes on Number Theory and Discrete Mathematics, Vol. 4 (1998), No. 2, 47-56.

1997

1. Atanassov K., An elementary numerical inequality, The Australian Mathematical Society Journal, Vol. 24, No. 5 (Dec. 1997), 182.
2. Atanassov K., Intuitionistic fuzzy logics and their logical axiomatic systems. Bol. Soc. Paran. Mat., Vol. 17 (1997), No. 1-2, 83-89.
3. Atanassov K., G. Gargov, On some rules of inference in the intuitionistic fuzzy logic. Comptes Rendus de l’Academie bulgare des Sciences, Tome 50, 1997, No. 7, 5-8.
4. Atanassov K., Algebraic aspect of the theory of the generalized nets.IV, Advances in Modelling & Analysis, A, Vol. 32, 1997, No. 1-2, 43-47.
5. Atanassov K., Logical aspect of the theory of the generalized nets. II, Advances in Modelling & Analysis, A, Vol. 32, 1997, No. 1-2, 49-56.
6. Atanassov K., Algorithms of the functioning of the second type of intuitionistic fuzzy generalized nets, Advances in Modelling & Analysis, A, Vol. 32, 1997, No. 1-2, 57-61.
7. Poryazov, S., Atanassov K., Generalized net subscribers’ trafic model of communication switching systems, Advances in Modelling & Analysis, B, Vol. 37, 1997, No. 1-2, 27-35.
8. Atanassov K., Generalized nets and artificial intelligence, Advances in Modelling & Analysis, B, Vol. 37, 1997, No. 1-2, 37-51.
9. Sorsich, J., Atanassov K., Application of generalized nets in medicine (renal mass lesions), Modelling, Measurement & Control, C, Vol. 55, 1997, No. 1-2, 39-49.
10. Kirova-Yordanova Z., Atanassov K., Nikolov N., Nikolova N., Comulative exergy consumption of chemical processes: application of generalized nets, Proceedings of International Conference TAIES’97 Termodynamic Analysis and Inprovement of Energy Systems, Beijing, China, June 10-13, 1997, 384-390.
11. Kirova-Yordanova Z., Atanassov K., Nikolov N., Nikolova N., Comulative exergy consumption of chemical processes: application of generalized nets (an intuitionistic fuzzy approach), Proceedings of Florence World Energy Research Symposium “Clean Energy for the New Century FLOWERS’97”, Florence, Italy, July 30 – Aug. 1, 1997, 275-281.
12. Atanassov K., A modification of Sivaramakrishnan-Venkataraman’s inequality, Notes on Number Theory and Discrete Mathematics, Vol. 3, 1997, No. 2, 102-103.
13. Vassilev M., Atanassov K., Note on two inequalities, Notes on Number Theory and Discrete Mathematics, Vol. 3, 1997, No. 3, 167-169.
14. Atanassov K., Shannon A., Turner J., Remark on Fibonacci sequences and fuzzy sets, Comptes Rendus de l’Academie bulgare des Sciences, Tome 50, 1997, No. 2, 11-14.

1996

1. Kuncheva L., Atanassov K., An intuitionistic fuzzy RBF network, Proceedings of EUFIT’96, Aachen, Sept. 2-5, 1996, 777-781.
2. Atanassov K., Intuitionistic fuzzy interpretation of the conditional logic VW, Proceedings of The Second Workshop on Fuzzy Based Expert Systems FUBEST’96 (D. Lakov, Ed.), Sofia, Oct. 9-11, 1996, 81-86.
3. Atanassov K., Inequalities for , ϕ and ψ functions (II), Octogon, Vol. 4, No. 2, Oct. 1996, 18-20.
4. Atanassov K., Gearge Gargov and the intuitionistic fuzziness, Notes on Intuitionistic Fuzzy Sets, Vol. 2, 1996, No. 3, 3-4.
5. Gargov G., Atanassov K., An intuitionistic fuzzy interpretation of the basic axiom of the resolution, Notes on Intuitionistic Fuzzy Sets, Vol. 2, 1996, No. 3, 20-21.
6. Atanassov K., Irrational factor: definition, properties and problems, Notes on Number Theory and Discrete Mathematics, Vol. 2, 1996, No. 3, 42-44.
7. Atanassov K., A set-method for representation of the solutions of some Diophantine equations and some ot its applications, Notes on Number Theory and Discrete Mathematics, Vol. 2, 1996, No. 4, 21-26.
8. Atanassov K., On the solutions of t_m + t_n = t_x and t_m — t_n = t_y. Notes on Number Theory and Discrete Mathematics, Vol. 2, 1996, No. 4, 27-29.
9. Atanassov K., New integer functions related to ϕ, and σ functions. V, Notes on Number Theory and Discrete Mathematics, Vol. 2, 1996, No. 4, 52-55.
10. Atanassov K., An equality between intuitionistic fuzzy sets, Fuzzy sets and Systems Vol. 79 (1996), No. 2, 257-258.
11. Atanassov K., A problem in elementary number theory, Int. J. Math. Educ. Sci. Technol., 1996, Vol. 27, No. 1, 131.
12. Atanassov K., A remark on modification of Sperner’s lemma, Int. J. Math. Educ. Sci. Technol., 1996, Vol. 27, No. 1, 132-136.
13. Atanassov K., Remark on ϕ and ψ functions, Notes on Number Theory and Discrete Mathematics, Vol. 2, 1996, No. 1, 5-6.
14. Kirova-Yordanova Z., Atanassov K., Nikolov N., Nikolova N., Application of network methods for second-law analysis and optimization of chemical and thermal power plants, Proceedings of ECOS’96, “Efficiency, Costs, Optimization, Simulation and Environmental Aspects of Energy Systems”, Stockholm, June 25-27, 1996, 381-388.
15. Atanassov K., On Sperner’s lemma, Studia Scientiarum Mathematicarum Hungarica, Vol. 32 (1996), 71-74.
16. Atanassov K., A generalization of the Cauchy inequality, Int. J. Math. Educ. Sci. Technol., 1996, Vol. 27, No. 4, 625-626.

1995

1. Hadjyisky L., Atanassov K., Generalized net model of the intuitionistic fuzzy neural networks, Advances in Modelling & Analysis, AMSE Press, Vol. 23, 1995, No. 2, 59-64.
2. Sasselov D., Atanassov K., Large scale structure models described by generalized nets, Advances in Modelling & Analysis, AMSE Press, Vol. 23, 1995, No. 4, 53-58.
3. Sasselov D., Atanassov K., On the generalized nets realization of a combinatorial game-method for modelling in astronomy, Advances in Modelling & Analysis, AMSE Press, Vol. 23, 1995, No. 4, 59-64.
4. Atanassov K., A property of the generalized nets, Advances in Modelling & Analysis, AMSE Press, Vol. 24, 1995, No. 1, 1-5.
5. Atanassov K., More on the concept “generalized nets”. VIII, Advances in Modelling & Analysis, AMSE Press, Vol. 24, 1995, No. 1, 7-10.
6. Gargov K., Atanassov K., On the intuitionistic fuzzy logic operations, Notes on Intuitionistic Fuzzy Sets, Vol. 1, No. 1, 1995, 1-4.
7. Atanassov K., Ideas for intuitionistic fuzzy equations, inequalities and optimization, Notes on Intuitionistic Fuzzy Sets, Vol. 1, No. 1, 1995, 17-24.
8. Shannon A., Atanassov K., Intuitionistic fuzzy graphs from  α-, β– and (α,β)-levels, Notes on Intuitionistic Fuzzy Sets, Vol. 1, No. 1, 1995, 32-35.
9. Atanassov K., Some properties of the generalized net global operator G3 , Advances in Modelling & Analysis, A, AMSE Press, Vol. 24, 1995, No. 4, 12-17.
10. Atanassov K., Georgiev P., Generalized nets and expert systems. VIII, Advances in Modelling & Analysis, A, AMSE Press, Vol. 25, 1995, No. 3, 53-64.
11. Atanassov K., On the inductive definition of the concept generalized net, Advances in Modelling & Analysis, A, AMSE Press, Vol. 26, 1995, No. 2, 1-7.
12. Atanassov K., A generalized net “behind” another net, Advances in Modelling & Analysis, A, AMSE Press, Vol. 26, 1995, No. 3, 1-9.
13. Atanassov K., A generalized net “behind” other nets, Advances in Modelling & Analysis, A, AMSE Press, Vol. 26, 1995, No. 3, 11-18.
14. Atanassov K., Generalized nets and systems theory. I, Advances in Modelling & Analysis, C, AMSE Press, Vol. 46, 1995, No. 2, 21-31.
15. Atanassov K., Generalized nets and systems theory. II, Advances in Modelling & Analysis, C, AMSE Press, Vol. 46, 1995, No. 2, 32-43.
16. Atanassov K., Generalized nets and systems theory. III, Advances in Modelling & Analysis, C, AMSE Press, Vol. 46, 1995, No. 2, 44-54.
17. Atanassov K., Generalized nets and systems theory. IV, Advances in Modelling & Analysis, C, AMSE Press, Vol. 46, 1995, No. 2, 55-64.
18. Atanassov K., Generalized nets and systems theory. V, Advances in Modelling & Analysis, C, AMSE Press, Vol. 46, 1995, No. 3, 1-11.
19. Atanassov K., Generalized nets and systems theory. VI, Advances in Modelling & Analysis, C, AMSE Press, Vol. 46, 1995, No. 3, 13-25.
20. Atanassov K., Generalized nets and systems theory. VII, Advances in Modelling & Analysis, C, AMSE Press, Vol. 46, 1995, No. 3, 27-35.
21. Atanassov K., Generalized nets and systems theory. VIII, Advances in Modelling & Analysis, C, AMSE Press, Vol. 46, 1995, No. 3, 37-45.
22. Atanassov K., Shannon A., Turner J., The generation of trees from coupled third order recurrence relations, Discrete Mathematics and Applications (S. Shtrakov and I. Mirchev, Eds.), Research in mathematics, Vol. 5, Blagoevgrad, 1995, 46-56.
23. Atanassov K., Bustince H., Burillo P., Mohedano V., A method for inference in approximate reasoning for the one-dimensional case based on normal intuitionistic fuzzy sets, Proceedings of the VI IFSA World Congress, Sao Paulo, Brazil, July 1995, Vol. 1, 149-152.
24. Atanassov K., On intuitionistic fuzzy graphs and intuitionistic fuzzy relations, Proceedings of the VI IFSA World Congress, Sao Paulo, Brazil, July 1995, Vol. 1, 551-554.
25. Atanassov K., Remark on a new direction for a generalization of the Fibonacci sequence, The Fibonacci Quarterly, Vol. 33 (1995), No. 3, 249-250.
26. Atanassov K., Remarks on the intuitionistic fuzzy sets – III, Fuzzy sets and Systems Vol. 75 (1995), No. 3, 401-402.
27. Dimitrov D., Atanassov K., Geleva A., A generalized net model of an oligopolistic market, International Colloquy the Risk in Contemporary Economie, Galati, Romania, Nov. 10-11, 1995, 39-44.
28. Atanassov K., Remarks on prime numbers. II, Notes on Number Theory and Discrete Mathematics, Vol. 1, 1995, No. 2, 51-52.
29. Atanassov K., S. Mihov, A. Peretti, Computer calculus to some problems in number theory. 4, Notes on Number Theory and Discrete Mathematics, Vol. 1, 1995, No. 2, 71-92.
30. Atanassov K., Three hypotheses on ϕ and σ functions, Notes on Number Theory and Discrete Mathematics, Vol. 1, 1995, No. 3, 103-104.
31. Atanassov K., Note on one inequality, Notes on Number Theory and Discrete Mathematics, Vol. 1, 1995, No. 3, 146-148.
32. Atanassov K., Inequalities for ϕ, ψ and σ functions, Octogon, Vol. 3, No. 2, Oct. 1995, 11-13.

1994

1. Atanassov K., New operations, defined over the intuitionistic fuzzy sets. Fuzzy Sets and Systems, Vol. 61, 1994, No. 2, 137-142.
2. Atanassov K., Atanassova L., Sasselov D., On the combinatorial game-method for modelling in astronomy, Comptes Rendus de l’Academie bulgare des Sciences, Tome 47, 1994, No. 9, 5-7.
3. Atanassov K., Some operators of a modal type in intuitionistic fuzzy modal logic, Comptes Rendus de l’Academie bulgare des Sciences, Tome 47, 1994, No. 12, 5-8.
4. Popova B., Atanassov K., Opposite generalized nets. I, Advances in Modelling & Analysis, AMSE Press, Vol. 19, 1994, No. 2, 15-21.
5. Popova B., Atanassov K., Opposite generalized nets. II, Advances in Modelling & Analysis, AMSE Press, Vol. 19, 1994, No. 2, 23-28.
6. Atanassov K., Two-way generalized nets, Advances in Modelling & Analysis, AMSE Press, Vol. 19, 1994, No. 2, 29-39.
7. Atanassov K., On a combinatorial game-method for modelling, Advances in Modelling & Analysis, AMSE Press, Vol. 19, 1994, No. 2, 41-47.
8. Atanassov K., More on the concept “generalized nets”. VI, Advances in Modelling & Analysis, AMSE Press, Vol. 19, 1994, No. 3, 1-6.
9. Popova B., Atanassov K., Tetev M., Generalized nets in which the tokens obtain variables as characteristics, Advances in Modelling & Analysis, AMSE Press, Vol. 19, 1994, No. 3, 7-11.
10. Atanassov K., More on the concept “generalized nets”. VII, Advances in Modelling & Analysis, AMSE Press, Vol. 21, No. 1, 1994, 61-64.
11. Atanassov K., Georgiev P., Generalized nets and expert systems. VI, Advances in Modelling & Analysis, A, AMSE Press, Vol. 21, No. 2, 1994, 1-14.
12. Atanassov K., Generalized nets and expert systems. VII, Advances in Modelling & Analysis, A, AMSE Press, Vol. 21, No. 2, 1994, 15-22.
13. Atanassov K., Some modal type of operators in intuitionistic fuzzy modal logic – Part I, BUSEFAL, Vol. 58, 1994, 51-55.
14. Atanassov K., Some modal type of operators in intuitionistic fuzzy modal logic – Part II, BUSEFAL, Vol. 58, 1994, 56-59.
15. Atanassov K., Intuitionistic fuzzy systems, BUSEFAL, Vol. 58, 1994, 92-96.
16. Atanassov K., Norms and metrics over intuitionistic fuzzy logics, BUSEFAL, Vol. 59, 1994, 49-58.
17. Atanassov K., Relations between the quantors and the modal type of operators in intuitionistic fuzzy logics, BUSEFAL, Vol. 59, 1994, 59-63.
18. Atanassov K., Intuitionistic fuzzy sets and expert estimations. II, BUSEFAL, Vol. 59, 1994, 64-69.
19. Atanassov K., Remark on intuitionistic fuzzy expert systems, BUSEFAL, Vol. 59, 1994, 71-76.
20. Atanassov K., Gargov G., Intuitionistic fuzzy logic operators of a set theoretical type, Proc. of the First Workshop on Fuzzy Based Expert Systems (D. Lakov, Ed.), Sofia, Sept. 28- 30, 1994, 39-42.
21. Shannon A., Atanassov K., A first step to a theory of the intuitionistic fuzzy graphs, Proc. of the First Workshop on Fuzzy Based Expert Systems (D. Lakov, Ed.), Sofia, Sept. 28- 30, 1994, 59-61.
22. Atanassov K., A new algebraic object related to matrices. Part I, Preprint MRL-1-94, Sofia, 1994.
23. Atanassov K., A new algebraic object related to matrices. Part II, Preprint MRL-2-94, Sofia, 1994.
24. Atanassov K., A new algebraic object related to matrices. Part III, Preprint MRL-3-94, Sofia, 1994.
25. Atanassov K., A new algebraic object related to matrices. Part IV, Preprint MRL-4-94, Sofia, 1994.
26. Atanassov K., A new algebraic object related to matrices. Part V, Preprint MRL-5-94, Sofia, 1994.
27. Atanassov K., A new algebraic object related to matrices. Part VI, Preprint MRL-6-94, Sofia, 1994.
28. Atanassov K., A new algebraic object related to matrices. Part VII, Preprint MRL-7-94, Sofia, 1994.
29. Atanassov K., A new algebraic object related to matrices. Part VIII, Preprint MRL-8-94, Sofia, 1994.
30. Atanassov K., A new algebraic object related to matrices. Part IX, Preprint MRL-9-94, Sofia, 1994.
31. Atanassov K., Operators over interval valued intuitionistic fuzzy sets, Fuzzy Sets and Systems, Vol. 64, 1994, No. 2, 159-174.
32. Atanassov K., Index matrix representation of the intuitionistic fuzzy graphs, Fifth Scientific Session of the Math. Foundations of Artificial Intelligence Seminar, Sofia, Oct. 5, 1994, Preprint MRL-MFAIS-10-94, 36-41.

1993

1. Atanassov K., New operators over the intuitionistic fuzzy sets, Comptes rendus de l’Academie bulgare des Sciences, Tome 46, 1993, No. 11, 5-7.
2. Atanassov K., Christov R., New conservative extensions of the generalized nets. Advances in Modelling & Analysis, AMSE Press, Vol. 14, No. 2, 1993, 27-34.
3. Atanassov K., Extending operators defined on the class of generalized nets. II, Advances in Modelling & Analysis, AMSE Press, Vol. 14, No. 4, 1993, 11-17.
4. Atanassov K., Georgiev Ch., Intuitionistic fuzzy Prolog, Fuzzy sets and Systems Vol. 53 (1993), No. 1, 121-128.
5. Atanassov K., Level operators on intuitionistic fuzzy sets, BUSEFAL Vol. 54, 1993, 4-8.
6. Hadjyisky L., Atanassov K., Intuitionistic fuzzy model of a neural network, BUSEFAL Vol. 54, 1993, 36-39.
7. Atanassov K., New variant of modal operators in intuitionistic fuzzy modal logic, BUSEFAL Vol. 54, 1993, 79-83.
8. Atanassov K., Research on intuitionistic fuzzy sets, 1990-1992, Fuzzy sets and Systems Vol. 54 (1993), No. 3, 363-364.
9. Atanassov K., Some extremal properties of the polyhedrons Preprint MRL-1-93, Sofia, 1993.
10. Atanassov K., New results in the theory of generalized nets, in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 2-30.
11. Christov R., Atanassov K., Two new conservative extensions of the generalized nets, in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 43-47.
12. Hadjyisky L., Atanassov K., Generalized nets representing the elements of neuron networks, in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 49-67.
13. Atanassov K., Generalized nets and some travelling salesman problems, in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 68-81.
14. Christov R., K. Atanassov, Generalized nets and labyrinths, in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 82-84.
15. Atanassov K., P. Georgiev, M. Tetev, Generalized nets and expert systems. V, in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 96-105.
16. Kirova A., K. Atanassov, Modelling the activities of the international transport, in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 125-138.
17. Stefanova-Pavlova M., K. Atanassov, Generalized net models for flexible manufacturing systems, in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 172-207.
18. Dimitrova S., L. Dimitrova, T. Kolarova, P. Petkov, K. Atanassov, R. Christov, Generalized net models of the activity of NEFTOCHIM Petrochemical Combine in Bourgas, in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 208-213.
19. Sorsich J. K. Atanassov, Applications of the generalized nets in nephrology, in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 220-290.
20. Atanassov K., Norms and metrics over intuitionistic fuzzy sets, BUSEFAL, Vol. 55, 1993, 11-20.
21. Atanassov K., Intuitionistic fuzzy sets and expert estimations, BUSEFAL, Vol. 55, 1993, 67-71.
22. Atanassov K., More on the concept “generalized nets”. V, Advances in Modelling & Analysis, AMSE Press, Vol. 17, No. 1, 1993, 5-12.
23. Atanassov K., Christov R., About the program realization of the generalized nets, Advances in Modelling & Analysis, AMSE Press, Vol. 17, No. 1, 1993, 13-24.
24. Atanassov K., Generalized nets with special types initial tokens’ characteristics. I, Advances in Modelling & Analysis, AMSE Press, Vol. 17, No. 1, 1993, 25-31.
25. Atanassov K., Generalized nets with special types initial tokens’ characteristics. II, Advances in Modelling & Analysis, AMSE Press, Vol. 17, No. 1, 1993, 33-38.
26. Atanassov K., Generalized nets with special types initial tokens’ characteristics. III, Advances in Modelling & Analysis, AMSE Press Vol. 17, No. 1, 1993, 39-46.
27. Atanassov K., Generalized nets with special types initial tokens’ characteristics. IV, Advances in Modelling & Analysis, AMSE Press Vol. 17, No. 1, 1993, 47-54.
28. Tetev M., Sorsich J., Atanassov K., Generalized net model of hospital activities, Advances in Modelling & Analysis, AMSE Press Vol. 17, No. 1, 1993, 55-64.
29. Atanassov K., A universal operator over intuitionistic fuzzy sets, Compt. rend. Acad. bulg. Sci., Tome 46, N. 1, 1993, 13-15.
30. Atanassov K., A second type of intuitionistic fuzzy sets, BUSEFAL, Vol. 56, 1993, 66-70.
31. Atanassov K., Relations between both types of intuitionistic fuzzy sets, BUSEFAL, Vol. 56, 1993, 71-72.
32. Atanassov K., Constraint logic programming and intuitionistic fuzzy logics, BUSEFAL, Vol. 56, 1993, 98-107.

1992

1. Atanassov K., On one inequality, Bulletin of Number Theory, Vol. XVI, 1992, 27-29.
2. Atanassov K., One Sierpinski’s problem related to the tringular numbers, Bulletin of Number Theory, Vol. XVI, 1992, 53-55.
3. Atanassov K., On the solutions of t_x = t_y + t_z , Bulletin of Number Theory, Vol. XVI, 1992, 57-59.
4. Atanassov K., On problem related to the triangular numbers, Bulletin of Number Theory, Vol. XVI, 1992, 61-65.
5. Atanassov K., Georgiev P., On one generalization of the Fibonacci sequence. Part I: Matrix representation, Bulletin of Number Theory, Vol. XVI, 1992, 67-73.
6. Atanassov K., Georgiev P., On one generalization of the Fibonacci sequence. Part II: Some relations with arbitrary initial values, Bulletin of Number Theory, Vol. XVI, 1992, 75-82.
7. Atanassov K., Georgiev P., On one generalization of the Fibonacci sequence. Part III: Some relations with fixed initial values, Bulletin of Number Theory, Vol. XVI, 1992, 83-92.
8. Atanassov K., A note on one generalization of the ϕ and σ functions. Part II, Bulletin of Number Theory, Vol. XVI, 1992, 99-102.
9. Atanassov K., A note on one generalization of the ϕ and σ functions. Part III, Bulletin of Number Theory, Vol. XVI, 1992, 103-108.
10. Atanassov K., Mihov S., Peretti A., On polynomials with prime number values, Bulletin of Number Theory, Vol. XVI, 1992, 125-132.
11. Atanassov K., Mihov S., Peretti A., Computer calculus related to some problems in number theory (1), Bulletin of Number Theory, Vol. XVI, 1992, 133-139.
12. Atanassov K., Mihov S., Peretti A., Computer calculus related to some problems in number theory (2), Bulletin of Number Theory, Vol. XVI, 1992, 145-148.
13. Atanassov K., Methodological aspect of the theory of generalized nets. II, AMSE Review, Vol. 20, No. 4, 1992, 53-64.
14. Atanassov K., Universal generalized nets. II, AMSE Review, Vol. 21, No. 1, 1992, 59-64.
15. Atanassov K., Generalized nets and extensions of the travelling salesman problem. AMSE Review, Vol. 21, No. 2, 1992, 16-26.
16. Atanassov K., Hlebarova J., Mihov S., Recurrent formulas of the generalized Fibonacci and Tribonacci sequences, The Fibonacci Quarterly, Vol. 30 (1992), No. 1, 77-79.
17. Atanassov K., Remarks on the intuitionistic fuzzy sets, Fuzzy sets and Systems Vol. 51 (1992), No. 1, 117-118.
18. Atanassov K., Christov R. Program Package for Generalized Nets (PPGN), Petri Net Newsletter 42, Aug. 1992, 23-26.
19. Atanassov K., Intuitionistic fuzzy constraint logic programming, Preprint MRL-1-92, Sofia, 1992.
20. Gargov G., Atanassov K., Two results in intuitionistic fuzzy logic, Comptes Rendus de l’Academie bulgare des Sciences, Tome 45, 1992, No. 12, 29-31.

1991

1. Gyurov P., Atanassov K., On the representation of generalized net transitions by fixed set of transitions. Preprint IM-MFAIS-2-91, Sofia, 1991; in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 31-42.
2. Atanassov K., Second type intuitionistic fuzzy generalized nets, AMSE Review, Vol. 17, No. 1, 1991, 5-8.
3. Petkov S., Atanassov K., Generalized net model of the intuitionistic fuzzy reasoning in the context expert system tool, Proc. of the XX Spring Conf. of the Union of Bulg. Math., Varna, Drujba, April 1991, 336-340.
4. Georgiev, C., Atanassov K., Logic programming with intuitionistic fuzzyness, BUSEFAL, Vol. 48, 1991, 104-113.
5. Atanassov K., Temporal intuitionistic fuzzy sets. Comptes Rendus de l’Academie bulgare des Sciences, Tome 44, 1991, No. 7, 5-7.
6. Shannon A., Turner J., Atanassov K., A generalized tableau associated with colored convolution trees, Discrete Mathematics, Vol. 92, No. 1-3, Nov. 1991, 329-340.
7. Atanassov, K. Remark on new object related with intuitionistic fuzzy sets, BUSEFAL, Vol. 49, 1991, 20-23.
8. Atanassov K., Inequalities for ϕ and σ functions. I. Bull. of Number Theory and Related Topics Vol. XV (1991), No. 1-3, 12-14.
9. Atanassov K., Inequalities for ϕ and σ functions. II. Bull. of Number Theory and Related Topics Vol. XV (1991), No. 1-3, 15-18.
10. Atanassov K., Inequalities for ϕ and σ functions. III. Bull. of Number Theory and Related Topics Vol. XV (1991), No. 1-3, 19-20.
11. Atanassov K., A note on a generalization of the ϕ and σ functions. Bull. of Number Theory and Related Topics Vol. XV (1991), No. 1-3, 21-23.

1990

1. Atanassov K., The generalized net which represents all Petri nets. AMSE Review, Vol. 12, No. 3, 1990, 33-37.
2. Atanassova L., Atanassov K., More on the concept “generalized net”. IV. AMSE Review, Vol. 12, No. 3, 1990, 39-45.
3. Hadjyisky L., Atanassov K., Theorem for representation of the neuronal networks by generalized nets. AMSE Review, Vol. 12, No. 3, 1990, 47-54.
4. Atanassov K., Algebraic aspect of the theory of generalized nets. III. AMSE Review, Vol. 12, No. 3, 1990, 55-57.
5. Atanassov K., Methodological aspect of the theory of generalized nets. I. AMSE Review, Vol. 12, No. 3, 1990, 59-64.
6. Dincheva E., Atanassov K., Operator aspect of the theory of generalized nets. II. AMSE Review, Vol. 12, No. 4, 1990, 59-64.
7. Miteva T., Atanassov K., Topological aspect of the theory of generalized nets. III. AMSE Review, Vol. 13, No. 1, 1990, 1-8.
8. Atanassov K., Dynamical operators defined over the set of generalized nets. AMSE Review, Vol. 13, No. 1, 1990, 9-16.
9. Koneva L., Atanassov K., Generalized net models of transporta- tion problem. AMSE Review, Vol. 13, No. 1, 1990, 17-23.
10. Koneva L., Atanassov K., Generalized nets with optimization components. AMSE Review, Vol. 13, No. 1, 1990, 25-30.
11. Atanassov K., Atanassova L., Dimitrov E., Gargov G., Kazalarski I., Marinov M., Petkov S., Generalized nets and expert systems.IV. Proc. of the XIX Spring Conf. of the Union of Bulg. Math., Sunny Beach, April 1990, 155-161.
12. Atanassov K., Remark on a temporal intuitionistic fuzzy logic. Second Scientific Session of the “Mathematical Foundation Artificial Intelligence” Seminar, Sofia, March 30, 1990, Preprint IM-MFAIS-1-90, Sofia, 1990, 1-5.
13. Atanassov K., Intuitionistic fuzzy sets over different universes, Second Scientific Session of the “Mathematical Foundation of Artificial Intelligence” Seminar, Sofia, March 30, 1990, Preprint IM-MFAIS-1-90, Sofia, 1990, 6-9.
14. Stojanova D., Atanassov K., Relations between operators, defined over intuitionistic fuzzy sets, Second Scientific Session of the “Mathematical Foundation Artificial Intelli- gence” Seminar, Sofia, March 30, 1990, Preprint IM-MFAIS-1-90, Sofia, 1990, 46-49.
15. Atanassov K., Stojanova D., Cartesian products over intuitio- nistic fuzzy sets, Methodology of Mathematical Modelling, Vol. 1, Sofia, 1990, 296-298.
16. Atanassov K., Gargov G., Intuitionistic fuzzy logic. Comptes Rendus de l’Academie bulgare des Sciences, Tome 43, 1990, No. 3, 9-12.
17. Atanassov K., One new algebraic object. Third Scientific Session of the “Mathematical Foundation Artificial Intelligence” Seminar, Sofia, June 12, 1990, Preprint IM-MFAIS-2-90, Sofia, 1990, 1-5.
18. Atanassov K., Gargov G., Remarks on intuitionistic fuzzy sets in Bulgaria, 1987-1989. Fuzzy Sets and Systems, Vol. 35, No. 2, 1990, 257-258.
19. Hadjyisky L., Atanassov K., A generalized net, representing the elements of one neuron network set. AMSE Review, Vol. 14, No. 4, 1990, 55-59.
20. Atanassov K., A generalized net, representing the travelling salesman problem. AMSE Review, Vol. 14, No. 4, 1990, 61-64.
21. Atanassov K., Remark on M. Vassilev’s formula. Bull. of Number Theory and Related Topics Vol. XIV (1990), No. 1-3, 54-56.

1989

1. Atanassov K., Sandor J., On some modifications of ϕ and σ functions, Comptes Rendus de l’Academie bulgare des Sciences, Tome 42, 1989, No. 1, 55-58.
2. Atanassov K., On a generalization of the Fibonacci sequence in the case of three sequences. The Fibonacci Quarterly Vol. 27 (1989), No. 1, 7-10.
3. Атанасов К., За интуиционистки размитите множества и техните приложения, “Актуални проблеми на науката”, ЦНИ-БАН, София, 1989, кн. 1, 53 стр.
4. Atanassov K., Atanassova L., Dimitrov E., Gargov G., Kazalarski I., Marinov M., Petkov S., Stefanova-Pavlova M., Generalized nets and expert systems III. Methods of Operations Research, Vol. 63. Proc. of the 14-th Symposium on Operations Research. Ulm, Sept. 1989, 417-423.
5. Atanassov K., Dincheva E., Matev D., Stefanova-Pavlova M., Generalized net representation of flexible manufacturing systems. Methods of Operations Research, Vol. 63. Proc. of the 14-th Symposium on Operations Research. Ulm, Sept. 1989, 521-528.
6. Atanassov K., Atanassova L., Dimitrov E., Gargov G., Kazalar- ski I., Marinov M., Petkov S., Generalized nets and expert systems. Methods of Operations Research, Vol. 59. Proc. of the 12-th Symposium on Operations Research of the Gesellschaft fur Mathematik, Okonomie und Operations Research, 1987, Passau, Frankfurt a.M: Athenaeum, 1989, 301-310.
7. Atanassov K., Remark on variants of Fibonacci squares. Bull. of Number Theory and Related Topics Vol. XIII (1989), 25-27.
8. Atanassov K., One property of ϕ and σ functions. Bull. of Number Theory and Related Topics Vol. XIII (1989), 29-37.
9. Atanassov K., A remark on a Fibonacci plane. Bull. of Number Theory and Related Topics Vol. XIII (1989), 69-71.
10. Atanassov K., Geometrical interpretation of the elements of the intuitionistic fuzzy objects, Preprint IM-MFAIS-1-89, Sofia, 1989.
11. Atanassov K., Two variants of intuitionistic fuzzy modal logic, Preprint IM-MFAIS-3-89, Sofia, 1989.
12. Atanassov K., Four new operators on intuitionistic fuzzy sets, Preprint IM-MFAIS-4-89, Sofia, 1989.
13. Atanassov K., Gargov G., Interval valued intuitionistic fuzzy sets, Fuzzy Sets and Systems, Vol. 31, 1989, No. 3, 343-349.
14. Atanassov K., More on intuitionistic fuzzy sets, Fuzzy Sets and Systems, Vol. 33 (1989), No. 1, 37-45.
15. Dimitrov E., Kazalarski I., Atanassov K., Generalized net representing the basic properties of knowledge base. First Scientific Session of the “Mathematical Foundation of Artificial Intelligence” Seminar, Sofia, Oct. 10, 1989, Preprint IM-MFAIS-7-89, Sofia, 1989, 12-14; in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 106-111.
16. Atanassov K., Self-modification generalized nets. AMSE Review, Vol. 9, No. 3, 1989, 55-63.

1988

1. Atanassov K., Vassilev M., One extremal problem (5), Bull. of Number Theory and Related Topics Vol. XII (1988), 26-30.
2. Atanassov K., New integer functions, related to ϕ and σ functions. IV., Bull. of Number Theory and Related Topics Vol. XII (1988), 31-35.
3. Atanassova L., Atanassov K., A method for a table-calculation of functions ψ and “mod”. Bull. of Number Theory and Related Topics Vol. XII (1988), 36-38.
4. Atanassov K., One extremal problem (6), Bull. of Number Theory and Related Topics Vol. XII (1988), 90-92.
5. Parashkevov A., Nedelchev I., Atanassov K., Gospodiniv K., Radev R., Dobrev S., Anouncement: arithmetic functions program package. Bull. of Number Theory and Related Topics Vol. XII (1988), 123-126.
6. Gaidarov D., Atanassov K., The most prime prime numbers (2). Bull. of Number Theory and Related Topics Vol. XII (1988), 127-130.
   Atanassov K., More on the concept “Generalized net”.III, AMSE Review, Vol. 6 (1988), No. 3, 35-38.
7. Dimitrov E., Atanassov K., Theorem for representation of M-nets by Generalized nets, AMSE Review, Vol. 6 (1988), No. 4, 5-12.
8. Atanassov K., Atanassova L., Dimitrov E., Gargov G., Kazalarski I., Marinov M., Petkov S., Generalized nets and expert systems.II. Proc of Int. Conf. “Networks Information Processing Systems”, Sofia, May, 1988, Vol. 2, 54-67.
9. Atanassov K., On the functioning of the transitions of Generalized nets, AMSE Review, Vol. 7 (1988), No. 4, 21-27.
10. Atanassov K., Universal Generalized nets, AMSE Review, Vol. 7 (1988), No. 4, 29-35.
11. Atanassov K., Two operators on intuitionistic fuzzy sets, Comptes Rendus de l’Academie bulgare des Sciences, Tome 41, 1988, No. 5, 35-38.
12. Atanassov K., Remarks on ϕ and σ and other functions. Comptes Rendus de l’Academie bulgare des Sciences, Tome 41, 1988, No. 8, 41-44.
13. Atanassov K., Atanassova L., Kazalarski I., Dimitrov E., Analysis of the results of the functioning of a generalized net. AMSE Review, Vol. 9, No. 2, 1988, 37-48.
14. Atanassov K., Logical aspect of the theory of generalized nets. AMSE Review, Vol. 9, No. 2, 1988, 49-56.
15. Atanassov K., Dimitrov E., Starke P., Dynamical properties of generalized nets. AMSE Review, Vol. 9, No. 2, 1988, 57-63.
16. Atanassov K., Review and new results on intuitonistic fuzzy sets. Preprint IM-MFAIS-1-88, Sofia, 1988.
17. Atanassov K., Generalized nets – retrospection, present, perspective and application for modellng of real processes. Preprint IM-MFAIS-2-88, Sofia, 1988.
18. Atanassov K., Two variants of intuitonistc fuzzy propositional calculus. Preprint IM-MFAIS-5-88, Sofia, 1988.

1987

1. Vassilev M., Atanassov K., On Delan[n]oy numbers, Annuaire de l’Universite de Sofia “St. Kliment Ohridski”, Faculte de Mathematiques et Informatique, Livre 1 – Mathematiques, Tome 81, 1987, 153-162.
2. Atanassov K., New integer functions, related to ϕ and σ functions, Bull. of Number Theory and Related Topics Vol. XI (1987), No. 1, 3-26.
3. Atanassov K., More on ψ-function (I), Bull. of Number Theory and Related Topics Vol. XI (1987), No. 1, 27-30.
4. Atanassov K., More on ψ-function (II), Bull. of Number Theory and Related Topics Vol. XI (1987), No. 1, 31-36.
5. Atanassov K., Shannon A. G., Clarke J. H., A digit sum arithmetic function. Bull. of Number Theory and Related Topics Vol. XI (1987), No. 1, 37-49.
6. Atanassov K., Some assertions on ϕ and σ functions, Bull. of Number Theory and Related Topics Vol. XI (1987), No. 1, 50-63.
7. Atanassov K., One extremal problem (4), Bull. of Number Theory and Related Topics Vol. XI (1987), No. 1, 64-71.
8. Vassiles M., Atanassov K., Some identities with double sums, Bull. of Number Theory and Related Topics Vol. XI (1987), No. 2, 73-80.
9. Atanassov K., One remark on the square and the cube, Bull. of Number Theory and Related Topics Vol. XI (1987), No. 3, 175.
10. Atanassov K., On the new conservative extensions of generalized nets, AMSE Review, Vol. 4 (1987), No. 2, 13-18.
11. Stoeva S., Atanassov K., Reduced colour Generalized nets, AMSE Review, Vol. 4 (1987), No. 3, 17-22.
12. Atanassov K., Operator aspect of the theory of Generalized nets, AMSE Review, Vol. 4 (1987), No. 4, 27-30.
13. Atanassov K., Global operators defined on the set of Generalized nets. AMSE Review, Vol. 4 (1987), No. 4, 31-46.
14. Atanassov K., Local operators defined on the set of Generalized nets, AMSE Review, Vol. 5 (1987), No. 1, 54-63.
15. Atanassov K., Hierarchical operators defined on the set of Generalized nets, AMSE Review, Vol. 5 (1987), No. 2, 1-7.
16. Atanassov K., Reducing operators defined on the set of Generalized nets, AMSE Review, Vol. 5 (1987), No. 2, 8-11.
17. Atanassov K., Extending operators defined on the set of Generalized nets, AMSE Review, Vol. 5 (1987), No. 2, 12-17.
18. Atanassova L., K. Atanassov, E. Dimitrov, Time-diagrams for generalized nets, IV Int. Symp. “Automation and Sci. Instrumentation”, Varna, Sept. 1987, Proc. part II, 358-362.
19. Dimitrov E., Atanassov K., Modelling of interrupts and time-out-aspects with nets, Proc. of the XVI Spring Conf. of the Union of Bulg. Math., Sunny Beach, April 1987, 398-404.
20. Atanassov K., More on the concept “Generalized net”.II, AMSE Review, Vol. 5 (1987), No. 1, 1-7.
21. Atanassov K., Dimitrov E., Theorem for representation of the Generalized modification of Petri nets by Generalized nets, AMSE Review, Vol. 5 (1987), No. 1, 8-13.
22. Atanassov K., Some properties of ϕ and σ functions. Comptes Rendus de l’Academie bulgare des Sciences, Tome 40, 1987, No. 4, 35-38.
23. Atanassov K., Remark on the harmonic series. Comptes Rendus de l’Academie bulgare des Sciences, Tome 40, 1987, No. 5, 25-28.
24. Atanassov K., Research on intuitionistic fuzzy sets in Bulgaria. Fuzzy Sets and Systems Vol. 22 (1987), No. 1/2, 193.
25. Атанасов К., Атанасова Л., Димитров Е., Програмни средства за реализиране на мрежи на Петри и техните модификации. Автоматика, изчислителна техника и автоматизирани системи, 1987, кн. 6, 85-91.
26. Atanassov K., Dimitrov E., Theorem for representation of the Self-modification nets by Generalized nets, AMSE Review, Vol. 5 (1987), No. 3, 1-4.
27. Atanassov K., The generalized E-nets – predecessors of the Generalized nets, AMSE Review, Vol. 5 (1987), No. 3, 5-9.
28. Sorsich J., Atanassov K., Application of Generalized nets in medicine (Dysuria), Proc. of III Symp. Int. Ing. Biomed., Madrid, Oct. 1987, 639-642.
29. Sorsich J., Atanassov K., Application of Generalized nets in medicine (Acute Atta ck of Gouty Arthritis), Proc. of III Symp. Int. Ing. Biomed., Madrid, Oct. 1987, 643-645.
30. Atanassov K., Generalized index matrices, Comptes rendus de l’Academie Bulgare des Sciences, vol.40, 1987, No.11, 15-18.

1986

1. Atanassov K., Intuitionistic fuzzy sets, Fuzzy sets and Systems Vol. 20 (1986), No. 1, 87-96.
2. Atanassov K., Conflicts in Generalized net, AMSE Review, Vol. 3 (1986), No. 1, 1-6.
3. Stoeva S., Atanassov K., Generalized nets-representation of production systems interpreters, Proc. of the XV Spring Conf. of the Union of Bulg. Math., Sunny Beach, April 1986, 456-464.
4. Кирова А., Киров К., Атанасов К., Моделиране на дейностите на международния транспортен пазар чрез обобщени мрежи. Автоматика, изчислителна техника и автоматизирани системи, 1985, кн. 6, 61-66.
5. Atanassov K., Colour Generalized nets, AMSE Review, Vol. 3 (1986), No. 1, 7-11.
6. Atanassov K., Topological aspect of the theory of Generalized nets. I, AMSE Review, Vol. 3 (1986), No. 2, 1-6.
7. Atanassov K., Topological aspect of the theory of Generalized nets. II, AMSE Review, Vol. 3 (1986), No. 2, 7-11.
8. Stoeva S., Atanassov K., V-fizzy Petri nets and reduced V-fuzzy Generalized nets, AMSE Review, Vol. 3 (1986), No. 3, 1-5.
9. Atanassov K., Generalized nets and the classes of reduced Generalized nets resulting from them, AMSE Review, Vol. 3 (1986), No. 4, 1-6.
10. Atanassov K., More on the concept “Generalized net”, AMSE Review, Vol. 3 (1986), No. 4, 7-11.
11. Atanassov K., On one reduced Generalized net, AMSE Review, Vol. 4 (1986), No. 1, 49-56.
12. Atanassov K., On a second new generalization of the Fibonacci sequence. The Fibonacci Quarterly Vol. 24 (1986), No. 4, 362- 365.
13. Атанасов К., Димитров Е., Конфликтни ситуации в мрежите на Петри и техните обобщения. Автоматика, изчислителна техника и автоматизирани системи, 1986, кн. 10, 46-49.
14. Atanassov K., Stoeva S., Intuitionistic fuzzy programs. Proc. of the Second Polish Symp. on Interval & Fuzzy Mathematics, Poznan, Sept. 1986, 13-16.
15. Atanassov K., On the generalized arithmetical and geomethrical progressions. Bull. of Number Theory and Related Topics Vol. X (1986), No. 1, 8-18.
16. Atanassov K., Vassilev M., An extremal problem. 3. Bull. of Number Theory and Related Topics Vol. X (1986), No. 1, 19-25.
17. Atanassov K., Notes on the harmonic series. Bull. of Number Theory and Related Topics Vol. X (1986), No. 2, 10-20.

1985

1. Atanassov K., Dynamical elements in the Generalized nets, AMSE Review, Vol. 1 (1985), No. 4, 1-9.
2. Atanassov K., The Generalized nets and the other graphical means for modelling, AMSE Review, Vol. 2 (1985), No. 1, 59-64.
3. Atanassov K., The most prime prime numbers, Bull. of Number Theory and Related Topics Vol. IX (1985), No. 3, 4-6.
4. Atanassov K., Generalized nets and finite automata, AMSE Review, Vol. 2 (1985), No. 2, 1-7.
5. Atanassov K., Generalized nets and their fuzzings, AMSE Review, Vol. 2 (1985), No. 3, 39-49.
6. Atanassov K., An arithmetic function and some of its applications. Bull. of Number Theory and Related Topics Vol. 9, 1985, 18-27.
7. Atanassov K., Atanassova L., Sasselov D., A new perspective to the generalization of the Fibonacci sequence, The Fibonacci Quarterly Vol. 23 (1985), No. 1, 21-28.
8. Atanassov K., One extremal problem. 2. Bull. of Number Theory and Related Topics Vol. IX (1985), No. 2, 11-13.
9. Atanassov K., Two modifdcations of the problem of Iseki Kiyoshi and Nakakura Manabu. Bull. of Number Theory and Related Topics Vol. IX (1985), No. 3, 6-9.
10. Atanassov K., Short proof of a hypothesis of A. Mullin. Bull. of Number Theory and Related Topics Vol. IX (1985), No. 2, 9-11.
11. Атанасов К., Димитров Е., Щарке П., Мрежи на Петри и техните модификации, в “Актуални проблеми на науката”, София, ЦНИ-БАН, 1985, кн. 12, 56 стр.
12. Атанасов К., Кратки бележки върху обобщени мрежи, Автоматика, изчислителна техника и автоматизирани системи, 1985, кн. 3, 28-33.
13. Atanassov K., Algebraic aspect of the theory of Generalized nets. I, AMSE Review, Vol. 2 (1985), No. 4, 23-31.
14. Atanassov K., Algebraic aspect of the theory of Generalized nets. II, AMSE Review, Vol. 2 (1985), No. 4, 33-39.
15. Atanassov K., Theorem for completeness of the transitions of a Generalized net, AMSE Review, Vol. 2 (1985), No. 4, 41-45.
16. Atanassov K., Dimitrov E., On the representation of M-nets by Generalized nets, Proc. of the XIV Spring Conf. of the Union of Bulg. Math., Sunny Beach, April 1985, 317-322.
17. Todorov R., Atanassov K., Formal communication in Science: A model based on Generalized nets, Scientometrics, Vol.9 (1986), No. 3-4, 177-185; in Applications of generalized nets, (K. Atanassov, Ed.), World Scientific Publ. Co., Singapore, 1993, 85-95.

1984

1. Atanassov K., Conditions in Generalized nets, Proc. of the XIII Spring Conf. of the Union of Bulg. Math., Sunny Beach, April 1984, 219-226.
2. Atanassov K., Theory of Generalized nets (an algebraic aspect), Advances in Modelling & Simulation, AMSE Press Vol. 1 (1984), No. 2, 27-33.
3. Гаргов Г., Атанасов К., Кратък преглед на развитието на математическата логика и свързаните с нея дисциплини през ХХ век. в “Актуални пробеми на науката” ЦНИ-БАН, София, 1984, кн. 6, 42-52.
4. Atanassov K., Theory of Generalized nets (a topological aspect), Methods of Operation Research 51 (1984), 217-226.
5. Atanassov K., Stoeva S., Intuitionistic L-fuzzy sets, in R. Trappl (Ed.), Cybernetics and Systems Research 2 (Elsevier Sci. Publ., Amsterdam, 1984), 539-540.
6. Atanassov K., On the concept “Generalized net”, AMSE Review, Vol. 1 (1984), No. 3, 39-48.
7. Sorsich J., Atanassov K., Application of Generalized nets in medicine (Renal colic), Lecture Notes in Medical Inform. 24 (1984), 352-355.
8. Sorsich J., Atanassov K., Application of Generalized nets in medicine (Diagnostics of arterial hypertension of renal origin) Proc. of III Int. School “Automation and Scientific Instrumentation”, Varna, Oct. 1984, 233-236.
9. Atanassov K., On one problem of A. Mullin. Bull. of Number Theory and Related Topics Vol. VIII (1984), No. 3, 1-5.
10. Atanassov K., One extremal problem. Bull. of Number Theory and Related Topics Vol. VIII (1984), No. 3, 6-12.
11. Атанасов К., Атанасова Л., Един игрови метод за моделиране, Сб. докл. от III Междунар. школа “Автоматизация и научно приборостроене”, Варна, окт. 1984, 229-232.

1983

1. Димитров Е., Атанасов К., Оператори за сложност в теорията на мрежите. XII Пролетна конф. на СМБ, Сл. бряг, 1983, 317-322 .
2. Atanassov K., Theory of Generalized nets (an algebraic aspect. II). Proc. of II Int. Symp. “Automation and Scientific Instrumentation”, Varna, May 1983, 391-396.
3. Атанасов К., Интуиционистки размити множества, VII научна сесия на ИТКР, София, юни 1983, деп. в ЦИНТИ Нд 1697/84.
4. Атанасов К., Димитров Е., Янев К., Е-мрежи. Ретроспекция и перспективи. Автоматика и изчислителна техника, 1983, кн. 3, 39-51.
5. Atanassov, K., Stoeva S., Intuitionistic fuzzy sets, Polish Symp. on Interval & Fuzzy Mathematics, Poznan, Aug. 1983, Proc. 23-26.
6. Dimitrov E., Atanassov K., Quantitative Ansatze zur Komplexitatsbewritung von Netz-Modellen, Wissenschaftliche Arbeiten der Bulgarischen Aspiranten und Studenten, Technische Hochschule Ilmenau (DRR), 1983, 41-46.
7. Atanassov K., Theory of Generalized nets (a logical aspect), Proc. of Summer School on Math. Logic and its Applications, Primorsko, Sept. 1983, 26-29.

1982

1. Атанасов К., Алгебраична система на Е-мрежите, Сб. докл. от Межунар. школа по автоматизация на научните изследвания, Варна, април 1982, 123-128.
2. Атанасов К., Димитров Е. Теорема за нормален вид на преходите на Е-мрежите. Сб. докл. от Межунар. школа по автоматизация на научните изследвания, Варна, април 1982, 129-134.

1981

1. Атанасов К., Алгебраические аспекты Е-сетей, Сб. докл. от “Симп. по автоматизации научных исследований, Варна, окт. 1981, 143-148.
2. Атанасов К., Теорема о полноте в алгебраической теории Е-сетей Сб. докл. от “Симп. по автоматизации научных исследований, Варна, окт. 1981, 149-154.