MUSINA, R. Multiple positive solutions of a scalar field equation in ${\mathbb R}^n$. Topological Methods in Nonlinear Analysis, [S. l.], v. 7, n. 1, p. 171–185, 1996. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1996.007. Acesso em: 22 jul. 2024.