GRÜN, Bettina; ZEILEIS, Achim. Automatic Generation of Exams in R. Journal of Statistical Software, [S. l.], v. 29, n. 10, p. 1–14, 2009. DOI: 10.18637/jss.v029.i10. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v029i10. Acesso em: 16 mar. 2025.