MUNDA, M.; ROTOLO, F.; LEGRAND, C. parfm: Parametric Frailty Models in R. Journal of Statistical Software, [S. l.], v. 51, n. 11, p. 1–20, 2012. DOI: 10.18637/jss.v051.i11. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v051i11. Acesso em: 21 nov. 2024.