БОРСУК, С. П. Fuzzy entropy of distinguishing air traffic control students risk level during horizontal flight norms violation. Problems of Informatization and Control, [S. l.], v. 3, n. 51, p. 14–18, 2015. DOI: 10.18372/2073-4751.3.10303. Disponível em: https://jrnl.kai.edu.ua/index.php/PIU/article/view/10303. Acesso em: 18 oct. 2026.