GABADINHO, A.; RITSCHARD, G. Analyzing State Sequences with Probabilistic Suffix Trees: The PST R Package. Journal of Statistical Software, [S. l.], v. 72, n. 3, p. 1–39, 2016. DOI: 10.18637/jss.v072.i03. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v072i03. Acesso em: 29 jan. 2022.