JI, Y.; JIANG, W.; QIU, J. Solvability of fractional differential equations with integral boundary conditions at resonance. Topological Methods in Nonlinear Analysis, [S. l.], v. 42, n. 2, p. 461–479, 2013. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2013.046. Acesso em: 26 apr. 2024.