MEVIK, B.-H.; WEHRENS, R. The pls Package: Principal Component and Partial Least Squares Regression in R. Journal of Statistical Software, [S. l.], v. 18, n. 2, p. 1–23, 2007. DOI: 10.18637/jss.v018.i02. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v018i02. Acesso em: 18 aug. 2022.