TUSELL, Fernando. Kalman Filtering in R. Journal of Statistical Software, [S. l.], v. 39, n. 2, p. 1–27, 2011. DOI: 10.18637/jss.v039.i02. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v039i02. Acesso em: 2 apr. 2025.