FU, X.-C.; LU, W.; ASHWIN, P.; DUAN, J. Symbolic representations of iterated maps. Topological Methods in Nonlinear Analysis, [S. l.], v. 18, n. 1, p. 119–147, 2001. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2001.027. Acesso em: 29 mar. 2024.