HADJIAN, A.; ZOGRAPHOPOULOS, N. B.; AFROUZI, G. A. Multiple nonsemitrivial solutions for a class of degenerate quasilinear elliptic systems. Topological Methods in Nonlinear Analysis, [S. l.], v. 45, n. 2, p. 385–397, 2015. DOI: 10.12775/TMNA.2015.019. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2015.019. Acesso em: 24 apr. 2024.