Nguyen Kieu Hien, Nguyen Huu Mong, Ha Gia Son, and Tran Ngoc Tuan. “A LEAST SQUARES METHOD IN FORECASTING MODELS”. UTEHY Journal of Applied Science and Technology 13 (April 12, 2017): 69-73. Accessed December 22, 2024. http://tapchi.utehy.edu.vn/index.php/jst/article/view/216.