Nguyen, Tuan, Zhou Wen-Hui, and Yu Jian-Jun. “RESEARCH ON HO CHI MINH CITY CONGESTION PRICING BASEDON SPEED-DENSITY MODEL”. VNUHCM Journal of Science and Technology Development 17, no. 3 (September 30, 2014): 129-139. Accessed August 29, 2025. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/1524.