AKHMETKALIYEVA, R.; MUKASHEVA, T.; OSPANOV, K. Correct and Coercive Solvability Conditions for a Degenerate High Order Differential Equation. Eurasian Mathematical Journal, [S. l.], v. 14, n. 4, p. 09–14, 2023. Disponível em: https://emj.enu.kz/index.php/main/article/view/294. Acesso em: 5 oct. 2024.