FERGUSON, N.; DATTA, S.; BROCK, G. msSurv: An R Package for Nonparametric Estimation of Multistate Models. Journal of Statistical Software, [S. l.], v. 50, n. 14, p. 1–24, 2012. DOI: 10.18637/jss.v050.i14. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v050i14. Acesso em: 4 dec. 2021.