YESHKEYEV, A.R. Properties of a stability for positive Jonsson theories. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 77, n. 1, p. 60–66, 2015. Disponível em: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/12. Acesso em: 25 aug. 2025.