Khajiev I.O, Mamatqulova M.Sh, & Komiljonova G.A. (2023). Conditional Correctness of the Initial-Boundary Value Problem for The System of Second Order Mixed Type Equations. Eurasian Journal of Physics,Chemistry and Mathematics, 17, 47–57. Retrieved from https://geniusjournals.org/index.php/ejpcm/article/view/3984