Kim SG. Extreme and exposed symmetric bilinear forms on the space ${\mathcal L}_{s}(^2 l_{\infty}^2)$. Carpathian Math. Publ. [Internet]. 2020 Dec. 13 [cited 2024 Nov. 23];12(2):340-52. Available from: https://journals.pnu.edu.ua/index.php/cmp/article/view/4167