HUNTER, D. R.; GOODREAU, S. M.; HANDCOCK, M. S. ergm.userterms: A Template Package for Extending statnet. Journal of Statistical Software, [S. l.], v. 52, n. 2, p. 1–25, 2013. DOI: 10.18637/jss.v052.i02. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v052i02. Acesso em: 2 may. 2024.