KREPYCH , S. .; SPIVAK , I. .; SPIVAK , S. .; KREPYCH , R. . MATHEMATICAL MODEL FOR CALCULATING THE EXPERT’S COMPETENCY LEVEL. Advanced Information Systems, [S. l.], v. 10, n. 1, p. 5–10, 2026. DOI: 10.20998/2522-9052.2026.1.01. Disponível em: http://ais.khpi.edu.ua/article/view/350213. Acesso em: 30 jan. 2026.