YESHKEYEV, A.R.; ISSAEVA, A.K.; POPOVA, N.V. Closure of special atomic subsets of semantic model. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 97, n. 1, p. 97–103, 2020. DOI: 10.31489/2020m1/97-103. Disponível em: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/326. Acesso em: 28 aug. 2025.