AHMAD, B.; NIETO, J. J. Existence of solutions for anti-periodic boundary value problems involving fractional differential equations via Leray-Schauder degree theory. Topological Methods in Nonlinear Analysis, [S. l.], v. 35, n. 2, p. 295–304, 2010. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2010.017. Acesso em: 26 apr. 2024.