Pukach, P.Ya., S.M. Repetylo, M.M. Symotiuk, and M.I. Vovk. “Dirichlet-Neumann Problem for the Partial Differential Equations With Deviation over the Space Argument”. Carpathian Mathematical Publications 13, no. 2 (July 29, 2021): 315–325. Accessed April 25, 2024. https://journals.pnu.edu.ua/index.php/cmp/article/view/4159.