Kim, Sung Guen. “Classification of the Extreme Points of ${\mathcal L}_s(^2l_{\infty}^3)$ by Computation”. Carpathian Mathematical Publications 14, no. 2 (November 12, 2022): 371–387. Accessed November 24, 2024. https://vps.pnu.edu.ua/index.php/cmp/article/view/4794.