Moslehian, Mohammad Sal, Mostafa Sattari, and Khalid Shebrawi. “Extensions of Euclidean Operator Radius Inequalities”. Mathematica Scandinavica 120, no. 1 (February 23, 2017): 129–144. Accessed July 24, 2026. https://journals.msp.org/mscand/article/view/328.