Ismoilov AI, Mamanazarov AO, Urinov AK. Darboux problem for the generalized Euler – Poisson – Darboux equation. Ukr. Mat. Zhurn. [Internet]. 2017 Jan. 25 [cited 2025 Apr. 9];69(1):52-70. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/1675