“THE ILL-POSEDNESS OF A MIXED PROBLEM IN A CYLINDRICAL DOMAIN FOR MULTIDIMENSIONAL HYPERBOLIC-ELLIPTIC EQUATIONS IN CANCER MODELING”. International Journal of Mathematics and Physics 17, no. 1 (June 8, 2026): 84–91. Accessed July 24, 2026. https://ijmph.kaznu.kz/index.php/kaznu/article/view/1246.