CHABROWSKI, J.; FILIPPAS, S.; TERTIKAS, A. Positive solutions of a Neumann problem with competing critical nonlinearities. Topological Methods in Nonlinear Analysis, [S. l.], v. 28, n. 1, p. 1–31, 2006. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2006.017. Acesso em: 29 may. 2024.