GREENE, E. J. A SAS Macro for Covariate-Constrained Randomization of General Cluster-Randomized and Unstratified Designs. Journal of Statistical Software, Code Snippets, [S. l.], v. 77, n. 1, p. 1–20, 2017. DOI: 10.18637/jss.v077.c01. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v077c01. Acesso em: 27 apr. 2024.