GONELLA, L. Existence of periodic solutions for some singular elliptic equations with strong resonant data. Topological Methods in Nonlinear Analysis, [S. l.], v. 43, n. 1, p. 157–170, 2016. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2014.010. Acesso em: 22 jul. 2024.