| 2025 | FQAS | InterCriteria Analysis of Youth Not in Employment, Education or Training in the EU: Revealing Structural Analysis Through Intuitionistic Fuzzy Evaluations. | Sotir Sotirov, Rumiana Zheleva |
| 2019 | FQAS | Clustering of Intercriteria Analysis Data Using a Health-Related Quality of Life Data. | Sotir Sotirov, Desislava Vankova, Valentin Vasilev, Evdokia Sotirova |
| 2017 | EUSFLAT | Generalized Net Model of Fingerprint Recognition with Intuitionistic Fuzzy Evaluations. | Veselina Bureva, Plamena Yovcheva, Sotir Sotirov |
| 2017 | FQAS | A Generalized Net Model of the Neocognitron Neural Network. | Todor Petkov, Plamena Jovcheva, Zhivko Tomov, Stanislav Simeonov, Sotir Sotirov |
| 2017 | FQAS | Application of the InterCriteria Analysis Over Air Quality Data. | Evdokia Sotirova, Veselina Bureva, Irena Markovska, Sotir Sotirov, Desislava Vankova |
| 2015 | EUSFLAT | Application of the Intuitionistic Fuzzy InterCriteria Analysis Method to a Neural Network Preprocessing Procedure. | Sotir Sotirov, Vassia Atanassova, Evdokia Sotirova, Veselina Bureva, Deyan Mavrov |
| 2015 | FQAS | Modeling Logic Gates and Circuits with Generalized Nets. | Lenko Erbakanov, Todor Kostadinov, Todor Petkov, Sotir Sotirov, Veselina Bureva |
| 2015 | FQAS | Generalized Net Model of Person Recognition Using ART2 Neural Network and Viola-Jones Algorithm. | Todor Petkov, Sotir Sotirov, Stanimir Surchev |
| 2015 | FQAS | Modular Neural Network Preprocessing Procedure with Intuitionistic Fuzzy InterCriteria Analysis Method. | Sotir Sotirov, Evdokia Sotirova, Patricia Melin, Oscar Castillo, Krassimir T. Atanassov |