FRIENDLY, M. Data Ellipses, HE Plots and Reduced-Rank Displays for Multivariate Linear Models: SAS Software and Examples. Journal of Statistical Software, [S. l.], v. 17, n. 6, p. 1–43, 2006. DOI: 10.18637/jss.v017.i06. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v017i06. Acesso em: 25 apr. 2024.