KING, G. EI: A Program for Ecological Inference. Journal of Statistical Software, [S. l.], v. 11, n. 7, p. 1–41, 2004. DOI: 10.18637/jss.v011.i07. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v011i07. Acesso em: 27 may. 2022.