“Controllability Conditions for Fredholm Integro-Differential Equations With Degenerate Kernel in Banach Spaces”. Neliniini Kolyvannya 24, no. 4 (December 29, 2021): 482–497. Accessed June 13, 2026. https://nosc.imath.kiev.ua/index.php/nosc/article/view/1047.