ZHIMEI FU; ZUO, K.; YANG CHEN. New characterizations of k-normal and k-EP matrices: DOI: 10.48129/kjs.16087. Kuwait Journal of Science, [S. l.], v. 49, n. 4, 2022. DOI: 10.48129/kjs.16087. Disponível em: https://journalskuwait.org/kjs/index.php/KJS/article/view/16087. Acesso em: 21 apr. 2026.