IMANBAYEVA, A. Содержание 1 (44) 2013. Recent Contributions to Physics, [S. l.], v. 44, n. 1, p. 106–107, 2013. Disponível em: https://bph.kaznu.kz/index.php/zhuzhu/article/view/887. Acesso em: 8 дек. 2025.