Selected publications

  1. Atanassov, K., D. Mavrov, V. Atanassova. Intercriteria Decision Making: A New Approach for Multicriteria Decision Making, Based on Index Matrices and Intuitionistic Fuzzy Sets. Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 11, 2014, 1–8, ISBN: 978-83-61551-10-2.
  2. Traneva, V. Internal operations over 3-dimensional extended index matrices, Proceedings of the Jangjeon Mathematical Society, Vol. 18, 2015, No. 4, 547-569. (SJR 0. 035)
  3. Traneva, V., E. Sotirova, V. Bureva, K. Atanassov, Aggregation operations over 3-dimensional extended index matrices, Advanced Studies in Contemporary Mathematics, Vol. 25, 2015, No. 3, 407-416. (SJR = 1. 02)
  4. Vassilev, P., L. Todorova, V. Andonov, An auxiliary technique for InterCriteria Analysis via a three dimensional index matrix, Notes on Intuitionistic Fuzzy Sets, Vol. 21, 2015, No. 2, 71-76.
  5. Atanassov, K. Extended temporal intuitionistic fuzzy index matrices. Notes on Intuitionistic Fuzzy Sets, 22, 5, 2016, ISSN:Print ISSN 1310-4926; Online ISSN 2367-8283, 111-121.
  6. Bureva, V., Application of the index matrix operations over relational databases, Advanced Studies in Contemporary Mathematics, Vol. 26, 2016, No. 4, 669-679. SJR = 0.455.
  7. Shannon, A, Atanassova, V, Atanassov, K. Operation “concatenation” over intuitionistic fuzzy index matrices. Notes on Intuitionistic Fuzzy Sets, 22, 3, 2016, ISSN:Print ISSN 1310-4926; Online ISSN 2367-8283, 106-111.
  8. Traneva,V., V. Bureva, E. Sotirova, K. Atanassov, Index matrices and olap-cube Part 1: Application of the index matrices to presentation of operations in olap-cube, Advanced Studies in Contemporary Mathematics, Vol. 27, 2017, 2, 253-257, SJR = 0.455.
  9. Bureva, V., V. Traneva, E. Sotirova, K. Atanassov, Index Matrices And OLAP-Cube Part 2: An presentation of the OLAP-analysis by Index Matrices, Advanced Studies in Contemporary Mathematics, Vol. 27, 2017, No 4, 647-672, SJR = 0.455.
  10. de Tré, G., S. Zadrożny, S. Sotirov, K. Atanassov, Using index matrices for handling multiple scenarios in decision making, Notes on Intuitionistic Fuzzy Sets, Vol. 23, 2017, No. 2, 103-110.
  11. Vassilev, P., S. Ribagin, Todorova, On an aggregation of expert value assignments using index matrices. Notes on Intuitionistic Fuzzy Sets, Vol. 23, 2017, No. 4, 75-78.
  12. Atanassov K., Index Matrices with Elements Index Matrices, Proceedings of the Jangjeon Mathematical Society, 2018, 21(2), 221-228, SJR 0.208, http://jangjeonopen.or.kr/PJMS/journal.php.
  13. Atanassov K., n-Dimensional Extended Index Matrices. Part 1, Advanced Studies in Contemporary Mathematics, 2018, 28(2), 245-259, SJR 0.284, http://jangjeonopen.or.kr/ASCM/journal.php.
  14. Atanassov K, V. Bureva, Four Operations over Extended Intuitionistic Fuzzy Index Matrices and Some of Their Applications, accepted in Studies in Computational Intelligence, 2019, in press, SJR (2018) 0.183, https://www.springer.com/series/7092.
  15. Atanassov K., T. Pencheva, Cartesian Products over Intuitionistic Fuzzy Index Matrices, submitted to Proceedings of the Jangjeon Mathematical Society, 2019, SJR (2018) 0.208, http://jangjeonopen.or.kr/PJMS/journal.php.
  16. Atanassov K., V. Bureva, Four Operations over Extended Intuitionistic Fuzzy Index Matrices and Some of Their Applications, High Performance Computing, September 2-6, 2019, Borovets, Bulgaria, Book of Abstracts, p. 17.
  17. Atanassov, K., P. Vassilev, O. Roeva (2021) Level Operators over Intuitionistic Fuzzy Index Matrices, Mathematics, 9, 366, DOI: 10.3390/math9040366.
  18. Atanassov, K., (2020) Level operators over index matrices. Part 1: Index matrices with real non-negative elements. Proceedings of the Jangjeon Mathematical Society, 23, No. 4, 459-464, DOI: 10.17777/pjms2020.23.4.459.
  19. Atanassov, K. (2019-2020) Level operators over index matrices. Part 2: Index matrices with elements from a fixed interval. Annual of “Informatics” Section, Union of Scientists in Bulgaria, Vol. 10, 1-13.