Jenaliyev, M.T., and A.S. Kassymbekova. β€œOn the Initial Boundary Problem for Hyperbolic Equations With Exponential Degeneration T^ 12/7”. Journal of Mathematics, Mechanics and Computer Science 121, no. 1 (April 5, 2024): 27–36. Accessed July 22, 2024. https://bm.kaznu.kz/index.php/kaznu/article/view/1377.