WEST, L. J.; HANKIN, R. K. S. Exact Tests for Two-Way Contingency Tables with Structural Zeros. Journal of Statistical Software, [S. l.], v. 28, n. 11, p. 1–19, 2008. DOI: 10.18637/jss.v028.i11. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v028i11. Acesso em: 21 nov. 2024.