ALARCÓN, B. Rotation numbers for planar attractors of equivariant homeomorphisms. Topological Methods in Nonlinear Analysis, [S. l.], v. 42, n. 2, p. 327–343, 2013. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2013.039. Acesso em: 28 mar. 2024.