MIRSABUROV, M.; BERDYSHEV, A.S.; ERGASHEVA, S.B.; MAKULBAY, A.B. The problem with the missing Goursat condition at the boundary of the domain for a degenerate hyperbolic equation with a singular coefficient. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 114, n. 2, p. 147–164, 2024. DOI: 10.31489/2024m2/147-164. Disponível em: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/637. Acesso em: 25 aug. 2025.