V. M. Gorbachuk and M. L. Gorbachuk, “On the correct solvability of the Dirichlet problem for operator differential equations in a Banach space”, Ukr. Mat. Zhurn., vol. 58, no. 11, pp. 1462–1476, Nov. 2006, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3547