Bassani, Niccolò, Federico Ambrogi, Danila Coradini, Patrizia Boracchi, and Elia Biganzoli. 2012. “Validation of Gene Expression Profiles in Genomic Data through Complementary Use of Cluster Analysis and PCA-Related Biplots”. International Journal of Statistics in Medical Research 1 (2):162-73. https://doi.org/10.6000/1929-6029.2012.01.02.09.