Kim, S. G. “The Norming Set of a Symmetric Bilinear Form on the Plane With the Supremum Norm”. Matematychni Studii 55, no. 2 (June 22, 2021): 171-180. Accessed April 25, 2024. http://www.matstud.org.ua/ojs/index.php/matstud/article/view/152.