CANDITO, P.; D’AGUÌ, G.; PAPAGEORGIOU, N. S. Nonlinear noncoercive Neumann problems with a reaction concave near the origin. Topological Methods in Nonlinear Analysis, [S. l.], v. 47, n. 1, p. 289–317, 2016. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2016.007. Acesso em: 19 apr. 2024.