KHAJIEV I.O; MAMATQULOVA M.SH; KOMILJONOVA G.A. Conditional Correctness of the Initial-Boundary Value Problem for The System of Second Order Mixed Type Equations. Zeta Repository, [S. l.], v. 17, p. 47–57, 2023. Disponível em: https://zetarepo.com/index.php/zr/article/view/1881. Acesso em: 7 apr. 2025.