Kim SG, Lee CY. The numerical radius points of ${\mathcal L}(^2~ \ell^2_{{({\infty}, \theta)}}: \ell^2_{{({\infty}, \theta)}})$. MFAT [Internet]. 2023 Sep. 25 [cited 2025 Dec. 11];29(3-4):101-10. Available from: https://zen.imath.kiev.ua/index.php/mfat/article/view/852