YESBAYEV, A.N.; YESSENBAYEVA, G.A.; IVANOV, I.A. On the boundary value problem for the vibration and wave processes in two-dimensional environs. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 83, n. 3, p. 55–61, 2016. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/104. Acesso em: 10 jul. 2025.