Hà Thanh, Tùng, and Hiếu Nguyễn Minh. 1613322000. “Factors Associated With Bus Subsidy in Hanoi - Using Data of the Whole Network from 2011 to 2019”. Transport and Communications Science Journal 72 (2), 180-92. https://doi.org/10.47869/tcsj.72.2.4.