MISHURA, Yu. S.; TOMILOV, Yu. V. Method of successive approximations for abstract volterra equations in a banach space. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 51, n. 3, p. 376–382, 1999. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4620. Acesso em: 7 apr. 2025.