KIM, In-Sook. On orbits of the same type. Topological Methods in Nonlinear Analysis, [S. l.], v. 11, n. 1, p. 187–197, 1998. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1998.012. Acesso em: 5 feb. 2025.