BURENKOV, V.; OSPANOV, K. International Conference “Actual Problems of Analysis, Differential Equations and Algebra” (October 16-19, 2019, Astana, Kazakhstan). Eurasian Mathematical Journal, [S. l.], v. 9, n. 4, 2024. Disponível em: https://emj.enu.kz/index.php/main/article/view/134. Acesso em: 19 nov. 2024.