COMMANDEUR, J. J. F.; KOOPMAN, S. J.; OOMS, M. . Statistical Software for State Space Methods. Journal of Statistical Software, [S. l.], v. 41, n. 1, p. 1–18, 2011. DOI: 10.18637/jss.v041.i01. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v041i01. Acesso em: 30 jun. 2022.