BISCI, G. M.; RADULESCU, V. D. Bifurcation analysis of a singular elliptic problem modelling the equilibrium of anisotropic continuous media. Topological Methods in Nonlinear Analysis, [S. l.], v. 45, n. 2, p. 493–508, 2015. DOI: 10.12775/TMNA.2015.024. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2015.024. Acesso em: 24 jan. 2022.