Xuan Mai, Pham, Van Thi Bong, Nguyen Huu Huong, and Ho Phi Long. “RESEARCH FOR LPG APPLICATION ON CARS (TAXIS) IN HOCHIMINH CITY.”. VNUHCM Journal of Science and Technology Development 2, no. 11&12 (December 31, 1999): 30-40. Accessed July 18, 2025. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3694.