1. Atanassov, K.: Generalized Nets and Intuitionistic Fuzziness in Data Mining. Professor Marin Drinov Publishing House of Bulgarian Academy of Sciences, Sofia (2020)
2. Atanassov, K.: Index Matrices: Towards an Augmented Matrix Calculus. Springer, Cham (2014). https://doi.org/10.1007/978-3-319-10945-9
3. Atanassov, K., Sotirova, E.: Generalized Nets. Professor Marin Drinov Publishing House of Bulgarian Academy of Sciences, Sofia (2017). (in bulgarian)
4. Atanassov, K.: Theory of generalized nets (an algebraic aspect). AMSE Review 1(2), 27–33 (1984)
5. Atanassov, K.: Generalized Nets. World Scientific, Singapore (1991)