SCHILL, Walter; ENDERS, Dirk; DRESCHER, Karsten. A SAS Package for Logistic Two-Phase Studies. Journal of Statistical Software, [S. l.], v. 57, n. 9, p. 1–13, 2014. DOI: 10.18637/jss.v057.i09. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v057i09. Acesso em: 9 apr. 2025.