GORBACHUK, V. M.; GORBACHUK, M. L. On the correct solvability of the Dirichlet problem for operator differential equations in a Banach space. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 58, n. 11, p. 1462–1476, 2006. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3547. Acesso em: 5 dec. 2025.