VISSER, I.; SPEEKENBRINK, M. depmixS4: An R Package for Hidden Markov Models. Journal of Statistical Software, [S. l.], v. 36, n. 7, p. 1–21, 2010. DOI: 10.18637/jss.v036.i07. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v036i07. Acesso em: 23 may. 2022.