Zhuravlyov V. Р. Weakly Nonlinear Fredholm Integral Equations with Degenerate Kernel in Banach Spaces. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 67, n. 11, p. 1477–1490, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2083. Acesso em: 17 apr. 2025.