Krepych , Svitlana, Iryna Spivak, Serhii Spivak, and Roman Krepych. “MATHEMATICAL MODEL FOR CALCULATING THE EXPERT’S COMPETENCY LEVEL”. Advanced Information Systems 10, no. 1 (January 26, 2026): 5–10. Accessed January 30, 2026. http://ais.khpi.edu.ua/article/view/350213.