LENTH, R. V. Least-Squares Means: The R Package lsmeans. Journal of Statistical Software, [S. l.], v. 69, n. 1, p. 1–33, 2016. DOI: 10.18637/jss.v069.i01. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v069i01. Acesso em: 10 aug. 2022.