BERESTYCKI, Henri; CAPUZZO DOLCETTA, I.; NIRENBERG, Louis. Superlinear indefinite elliptic problems and nonlinear Liouville theorems. Topological Methods in Nonlinear Analysis, [S. l.], v. 4, n. 1, p. 59–78, 1994. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1994.023. Acesso em: 8 jul. 2025.