SAMOILENKO, A. M.; CHUIKO, S. M.; NESMELOVA, O. V. Nonlinear boundary-value problems unsolved with respect to the derivative. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 72, n. 8, p. 1106–1118, 2020. DOI: 10.37863/umzh.v72i8.5986. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5986. Acesso em: 9 dec. 2025.