Huseyn Ahmadov, Humeyir, y Rovshan Zulfiqar Humbataliev. On the Solvability of Some Boundary Value Problems for Operator-Differential Problems in a Finite Interval. Universidad y Sociedad 13, no. 6 (noviembre 11, 2021): 265-274. Accedido abril 25, 2024. https://rus.ucf.edu.cu/index.php/rus/article/view/2391.