“On a Coefficient Inverse Problem With Nonlocal Boundary Conditions of Periodic Type for the Three-Dimensional Tricomi Equation in a Parallelepiped”. Uzbek Mathematical Journal 70, no. 1 (March 25, 2026): 34–48. Accessed March 26, 2026. https://uzmj.mathinst.uz/index.php/uzmj/article/view/278.