Zoteva, Dafina, Vassia Atanassova, Olympia Roeva, and Eulalia Szmidt. "Generalized Net Model of Artificial Bee Colony Optimization Algorithm." In Neural Networks and Ap¬plications 2018 (ANNA?18). St. St. Konstantin and Elena Resort, Bulgaria, 2018.

Zoteva, Dafina, Olympia Roeva, and Vassia Atanassova. "Generalized Net Model of Artificial Bee Colony Optimization Algorithm with Intuitionistic Fuzzy Parameter Adaptation." Notes on Intuitionistic Fuzzy Set 24, no. 3 (2018): 92-104.

Andreev, Nikolay, Peter Vassilev, Vassia Atanassova, Olympia Roeva, and Krassimir Atanassov. Generalized net model of the cooperation between the Departments of transfusion Haematology and the National Centre of transfusion Haematology In Ad¬vances in Neural Networks and Applications 2018 (ANNA?18). St. Konstantin and Elena Resort, Bulgaria, 2018.

Atanassova, Vassia. Generalized Net Model of an Online Submission System In 13th International Workshop on Generalized Nets. London, 2012.