TASKARAYEV, A.; ABZHAPBAROV, A.; ASHIRBAYEV, N.K. The minimal and convex surfaces. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 78, n. 2, p. 145–151, 2015. Disponível em: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/36. Acesso em: 7 sep. 2025.