Vu Xuan Truong, Khong Doan Dien, and Nguyen Duy Chinh. 2017. “A NUMERICAL STUDY ON THE VIBRATION OF THE SHAFT WITH TORSIONAL EXCITATION”. UTEHY Journal of Applied Science and Technology 15 (October), 27-33. http://tapchi.utehy.edu.vn/index.php/jst/article/view/159.