Vu Xuan Thang, Tran Do Thu Ha, Dang Van Anh, and Nguyen Vinh Quy. “STUDY ON COLLECTION METHODS AND SUMMARY OF INFORMATION IN SOCIAL NETWORKS”. UTEHY Journal of Applied Science and Technology, Vol. 24, May 2020, pp. 77-81, http://tapchi.utehy.edu.vn/index.php/jst/article/view/328.