LIU, G.; SHI, S.; WEI, Y. The existence of nontrivial critical point for a class of strongly indefinite asymptotically quadratic functional without compactness. Topological Methods in Nonlinear Analysis, [S. l.], v. 43, n. 2, p. 323–344, 2016. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2014.019. Acesso em: 26 apr. 2024.