MURATKHAN, R.; SATYBALDINA, D.Zh. Assessment of risk of information security by means of the theory of fuzzy sets. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 79, n. 3, p. 66–74, 2015. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/50. Acesso em: 10 jul. 2025.