ZGLICZYŃSKI, P. Fixed point index for iterations of maps, topological horseshoe and chaos. Topological Methods in Nonlinear Analysis, [S. l.], v. 8, n. 1, p. 169–177, 1996. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1996.026. Acesso em: 22 lip. 2024.