TOKMAGAMBETOVA, T.D.; ORUMBAYEVA, N.T. On one solution of a periodic boundary value problem for a hyperbolic equations. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 109, n. 1, p. 141–155, 2023. DOI: 10.31489/2023m1/141-155. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/559. Acesso em: 10 jul. 2025.