KSHIRSAGAR, A. M. Distribution of the residual roots in principal components analysis. Defence Science Journal, [S. l.], v. 14, n. 4, p. 287–295, 2014. DOI: 10.14429/dsj.14.7162. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7162. Acesso em: 6 jul. 2025.