IMANBAYEVA, A. Содержание 2 (33) 2010. Recent Contributions to Physics, [S. l.], v. 33, n. 2, p. 101, 2018. Disponível em: https://bph.kaznu.kz/index.php/zhuzhu/article/view/1048. Acesso em: 6 дек. 2025.