MALANCHINI, Paolo; BISCI, Giovanni Molica; SECCHI, Simone. Mountain pass solutions for an entire semipositone problem involving the Grushin subelliptic operator. Topological Methods in Nonlinear Analysis, [S. l.], p. 1–26, 2026. DOI: 10.12775/TMNA.2025.037. Disponível em: https://apcz.umk.pl/TMNA/article/view/70081. Acesso em: 27 mar. 2026.