Tran Thi Ngoat, Le Ngoc Giang, Nguyen Thi Khanh, and Vu Thi Tua. 2018. “THE EFFECTIVENESS OF USING FACTS EQUIPMENT TO IMPROVE THE VOLTAGE STABILITY FOR TWO-SOURCE POWER SYSTEMS”. UTEHY Journal of Applied Science and Technology 16 (January), 38-42. http://tapchi.utehy.edu.vn/index.php/jst/article/view/142.