Linh, Pham Thi Thuy, and Hoang Thi Dong Quy. ‚ÄúThermoplastic Polyurethane Flame Retardant Using Phosphorus/Phosphorus-Nitrogen Compounds‚ÄĚ. Science and Technology Development Journal - Natural Sciences 2, no. 1 (January 6, 2019): 91-95. Accessed November 14, 2019. http://stdjns.scienceandtechnology.com.vn/index.php/stdjns/article/view/680.