Huan, Luu, Duy-Minh Nguyen, Hoang-Anh Pham, and Nguyen Huynh-Tuong. “Authentication in E-Learning Systems: Challenges and Solutions”. VNUHCM Journal of Engineering and Technology 3, no. SI1 (December 4, 2020): SI95-SI101. Accessed April 26, 2024. http://stdjet.scienceandtechnology.com.vn/index.php/stdjet/article/view/516.