INVERSE PROBLEMS FOR A DOUBLY DEGENERATE THIRD-ORDER DIFFERENTIAL EQUATION WITH MULTIPLE CHARACTERISTICS. Journal of Mathematics Mechanics and Computer Science, [S. l.], v. 130, n. 2, p. 59–70, 2026. DOI: 10.26577/JMMCS130220265. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/1976. Acesso em: 5 jul. 2026.