WICKHAM, H. . The Split-Apply-Combine Strategy for Data Analysis. Journal of Statistical Software, [S. l.], v. 40, n. 1, p. 1–29, 2011. DOI: 10.18637/jss.v040.i01. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v040i01. Acesso em: 22 oct. 2021.