ASSANOVA, A.T.; IMANCHIEV, A.E. On the solvability of a nonlocal boundary value problem for a loaded hyperbolic equations with multi-point conditions. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 81, n. 1, p. 15–25, 2016. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/72. Acesso em: 10 jul. 2025.