LUCHKA, A. Y.; NESTERENKO, O. B. Methods for the solution of boundary-value problems for weakly nonlinear integro-differential equations with parameters and restrictions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 61, n. 5, p. 672–679, 2009. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3049. Acesso em: 5 dec. 2025.