PILHÖFER, A.; UNWIN, A. New Approaches in Visualization of Categorical Data: R Package extracat. Journal of Statistical Software, [S. l.], v. 53, n. 7, p. 1–25, 2013. DOI: 10.18637/jss.v053.i07. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v053i07. Acesso em: 20 apr. 2024.