Document Type: Regular Paper
Department of Mathematics, Faculty of Science, Assiut University, 71516, Egypt
Department of Differential Equations, Kazan State University, 18 Kremlyovskaya St., Kazan, 420008, Russia
In this paper, we investigate some problems which can be reduced to the Goursat problem for a
fourth order equation. Some results and theorems are given concerning the existence and uniqence for the
solution of the suggested problem.