Dzhamalov S, Khalkhadzhaev B, Yusupov S. ON SMOOTHNESS OF THE SOLUTION TO A NONLOCAL BOUNDARY VALUE PROBLEM OF PERIODIC TYPE FOR A FOURTH-ORDER MIXED-TYPE EQUATION OF THE SECOND KIND. NUUz [Internet]. 2025 Nov. 27 [cited 2026 Apr. 30];2(2.1):10-9. Available from: http://journals.nuu.uz/index.php/actanuuz/article/view/9950