BALANOV, Z.; BRODSKY, S. On the genus of some subsets of $G$-spheres. Topological Methods in Nonlinear Analysis, [S. l.], v. 5, n. 1, p. 101–110, 1995. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1995.006. Acesso em: 22 jul. 2024.