“ Well-posedness of Dirichlet and Poincare problems in a cylindrical domain for degenerate many dimensional hyperbolic equations with Gellerstedt operator”, НК, vol. 18, no. 1, pp. 10–19, Mar. 2015, Accessed: Dec. 08, 2025. [Online]. Available: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/765