MOLDAGALI, Y. .; OSPANOV, . K. . On the correctness of one class of fourth order singular differential equations. Journal of Mathematics, Mechanics and Computer Science, [S. l.], v. 123, n. 3, p. 21–32, 2024. DOI: 10.26577/JMMCS2024-v123-i3-3. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/1516. Acesso em: 3 dec. 2024.