la Grange, Anthony, Niël le Roux, and Sugnet Gardner-Lubbe. “BiplotGUI: Interactive Biplots in R”. Journal of Statistical Software 30, no. 12 (June 25, 2009): 1–37. Accessed November 24, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v030i12.