CANDELA, A. M.; PALMIERI, G.; SALVATORE, A. Radial solutions of semilinear elliptic equations with broken symmetry. Topological Methods in Nonlinear Analysis, [S. l.], v. 27, n. 1, p. 117–132, 2006. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2006.004. Acesso em: 22 sep. 2023.