Apakov , Y. and Hamitov , A. 2023. ON SOLVABILITY OF THE BOUNDARY VALUE PROBLEM POSED FOR AN EQUATION WITH THE THIRD ORDER MULTIPLE CHARACTERISTICS IN A SEMI-BOUNDED DOMAIN IN THREE DIMENSIONAL SPACE. Journal of Osh State University. Mathematics. Physics. Technical Sciences. 1(2) (Jun. 2023), 13–23. DOI:https://doi.org/10.52754/16948645_2023_1_13.