Jain, Pankaj, and Sandhya Jain. “Normability and Duality in the Two-Dimensional Lorentz Spaces”. Eurasian Mathematical Journal 5, no. 4 (December 30, 2014): 79–91. Accessed September 18, 2025. https://emj.enu.kz/index.php/main/article/view/590.