Aldashev, S. A. (2000) “Some problems for multidimensional integro-differential equations of hyperbolic type”, Ukrains’kyi Matematychnyi Zhurnal, 52(5), pp. 590-595. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4453 (Accessed: 17May2024).