HIRK, R.; HORNIK, K.; VANA, L. mvord: An R Package for Fitting Multivariate Ordinal Regression Models. Journal of Statistical Software, [S. l.], v. 93, n. 4, p. 1–41, 2020. DOI: 10.18637/jss.v093.i04. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v093i04. Acesso em: 4 dec. 2021.