GOSHO, M. Criteria to Select a Working Correlation Structure in SAS. Journal of Statistical Software, Code Snippets, [S. l.], v. 57, n. 1, p. 1–10, 2014. DOI: 10.18637/jss.v057.c01. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v057c01. Acesso em: 29 apr. 2024.