МОЛДАҒАЛИ, Е.; OSPANOV, K. CONDITIONS FOR SOLVABILITY AND COERCIVENESS OF A FOURTH-ORDER DIFFERENTIAL EQUATION WITH AN INTERMEDIATE COEFFICIENT. Journal of Mathematics, Mechanics and Computer Science, [S. l.], v. 125, n. 1, 2025. DOI: 10.26577/JMMCS2025125105. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/1627. Acesso em: 3 apr. 2025.