YEE, T. . W. The VGAM Package for Categorical Data Analysis. Journal of Statistical Software, [S. l.], v. 32, n. 10, p. 1–34, 2010. DOI: 10.18637/jss.v032.i10. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v032i10. Acesso em: 7 oct. 2022.