Đặng Trường Sơn, Trần Công Tú and Phùng Quang Ngọc (2012) “The UTE online judge”, Journal of Technical Education Science, 7(4), pp. 21–27. Available at: https://jte.edu.vn/index.php/jte/article/view/823 (Accessed: 9 May 2026).