Khong Doan Dien, Nguyen Duy Chinh, Vu Xuan Truong, and Nguyen Thanh Tuan. “OPTIMAL DESIGN OF THE MTMD FOR REDUCING TORSIONAL VIBRATION BY USING GAUSS-NEWTON NONLINEAR REGRESSION ALGORITHM”. UTEHY Journal of Applied Science and Technology, Vol. 10, Apr. 2020, pp. 14-19, http://tapchi.utehy.edu.vn/index.php/jst/article/view/273.