COSSIO, J.; HERRÓN, S.; VÉLEZ, C. Existence of multiple solutions for a quasilinear elliptic problem. Topological Methods in Nonlinear Analysis, [S. l.], v. 50, n. 2, p. 531–551, 2017. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2017.019. Acesso em: 25 jan. 2022.