RASHID, M. M. Some inequalities for the numerical radius and spectral norm for operators in Hilbert $C^{\ast}$-modules space. Tamkang Journal of Mathematics, [S. l.], 2024. DOI: 10.5556/j.tkjm.56.2025.5167. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/5167. Acesso em: 22 jul. 2024.