MARCHETTI, G. M. Independencies Induced from a Graphical Markov Model After Marginalization and Conditioning: The R Package ggm. Journal of Statistical Software, [S. l.], v. 15, n. 6, p. 1–15, 2006. DOI: 10.18637/jss.v015.i06. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v015i06. Acesso em: 30 nov. 2022.