kizi NDB. ON SOME PROBLEMS WITH A MIXED FOR A HYPERBOLIC TYPE EQUATION WITH TWO LINES OF EXPRESSION. CAJMTCS [Internet]. 2022 Jul. 9 [cited 2026 Apr. 29];3(7):1-6. Available from: https://cajmtcs.casjournal.org/index.php/CAJMTCS/article/view/197