WURM, M. J.; RATHOUZ, P. J.; HANLON, B. M. Regularized Ordinal Regression and the ordinalNet R Package. Journal of Statistical Software, [S. l.], v. 99, n. 6, p. 1–42, 2021. DOI: 10.18637/jss.v099.i06. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v099i06. Acesso em: 26 oct. 2021.