LIU, Xiaoji; HAO, Huijia. New characteristics and applications of the EP, normal and Hermitian matrices. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 53, p. 248–266, 2025. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/5660. Acesso em: 18 may. 2026.