RAMAZANOV, M.I. 70th anniversary of Doctor of Physical and Mathematical Sciences, Professor Baltabek Kanguzhin. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 112, n. 4, p. 194–195, 2023. Disponível em: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/617. Acesso em: 28 aug. 2025.