González, Ignacio, Sébastien Déjean, Pascal G. P. Martin, and Alain Baccini. “CCA: An R Package to Extend Canonical Correlation Analysis”. Journal of Statistical Software 23, no. 12 (January 17, 2008): 1–14. Accessed August 15, 2022. https://www.jstatsoft.org/index.php/jss/article/view/v023i12.