Boundary-value problems with control for Fredholm integral equations with degenerate kernel in Banach spaces. Neliniini Kolyvannya, [S. l.], v. 24, n. 1, p. 83–98, 2021. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/1016. Acesso em: 8 dec. 2025.