BUTTS, C. T. network: A Package for Managing Relational Data in R. Journal of Statistical Software, [S. l.], v. 24, n. 2, p. 1–36, 2008. DOI: 10.18637/jss.v024.i02. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v024i02. Acesso em: 27 apr. 2024.