CANDITO, Pasquale; D’AGUÌ, Giuseppina; PAPAGEORGIOU, Nikolaos 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: 8 jul. 2025.