Nevalainen, Jaakko, and Hannu Oja. “SAS/IML Macros for a Multivariate Analysis of Variance Based on Spatial Signs”. Journal of Statistical Software 16, no. 5 (May 17, 2006): 1–17. Accessed November 21, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v016i05.