JENALIYEV, M.; ORYNBASSAR, B.; YERGALIYEV, M. ON A SPECTRAL PROBLEM FOR A FOURTH-ORDER DIFFERENTIAL OPERATOR. Journal of Mathematics, Mechanics and Computer Science, [S. l.], v. 127, n. 3, 2025. DOI: 10.26577/JMMCS202512736. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/1634. Acesso em: 8 oct. 2025.