Tran Khac D, Do Quoc C. Efficiency measurement of bus routes in Hanoi city: an application of data envelopment analysis (DEA). vn [Internet]. 1590598800 [cited 5tháng 122024];71(4):368-79. Available from: https://tcsj.utc.edu.vn/index.php/tcgtvt/article/view/539