LIU, Yan. STATISTICAL INFERENCE IN PRINCIPAL COMPONENT ANALYSIS BASED ON STATISTICAL THEORY. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 37, p. 565–574, 2017. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6677. Acesso em: 16 sep. 2026.