AITZHANOV, S. E.; Bekenaeva К. S.; Zhumagul G. О. Solvability of a Pseudohyperbolic Equation with a Nonlinear Boundary Condition. Journal of Mathematics, Mechanics and Computer Science, [S. l.], v. 108, n. 4, p. 26–37, 2020. DOI: 10.26577/JMMCS.2020.v108.i4.03. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/817. Acesso em: 3 jul. 2024.