BANI-DOMI, Watheq. GENERALIZED NUMERICAL RADIUS INEQUALITIES FOR 2 × 2 OPERATOR MATRICES. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 39, p. 31–38, 2018. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6957. Acesso em: 7 oct. 2026.