FRIEDRICH, Sarah; KONIETSCHKE, Frank; PAULY, Markus. GFD: An R Package for the Analysis of General Factorial Designs. Journal of Statistical Software, Code Snippets, [S. l.], v. 79, n. 1, p. 1–18, 2017. DOI: 10.18637/jss.v079.c01. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v079c01. Acesso em: 15 apr. 2025.