NAIMI, M.; BENHARRAT, M. Further inequalities for the numerical radius of off-diagonal part of 2 by 2 operator matrices. Tamkang Journal of Mathematics, [S. l.], 2025. DOI: 10.5556/j.tkjm.56.2025.5435. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/5435. Acesso em: 19 apr. 2025.