Arboretti Giancristofaro, Rosa, and Chiara Brombin. “Overview of NonParametric Combination-Based Permutation Tests for Multivariate Multi-Sample Problems”. Statistica 74, no. 3 (January 1, 2014): 233–246. Accessed February 5, 2023. https://rivista-statistica.unibo.it/article/view/5303.