Generalized inversion of Fredholm integral operators with degenerate kernel in a Banach spaces. Neliniini Kolyvannya, [S. l.], v. 17, n. 3, p. 351–364, 2014. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/749. Acesso em: 8 dec. 2025.