BALKIZOV, Zh.A. The first boundary value problem with deviation from the characteristics for a second-order parabolic-hyperbolic equation. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 90, n. 2, p. 34–42, 2018. DOI: 10.31489/2018m2/34-42. Disponível em: https://mts.buketov.edu.kz/mathematics-vestnik/article/view/205. Acesso em: 8 dec. 2025.