ASSANOVA, A.; TOKMURZIN, Z. A Nonlocal Multipoint Problem for a System of Fourth-Order Partial Differential Equations. Eurasian Mathematical Journal, [S. l.], v. 11, n. 3, p. 08–20, 2020. DOI: 10.32523/2077-9879-2020-11-3-08-20. Disponível em: https://emj.enu.kz/index.php/main/article/view/184. Acesso em: 30 sep. 2026.