Phan Thi Ha Linh, and Nguyen Dac Trung. “STUDY TO BUILD MEASURING SYSTEM OF FORCE ON THE CRANK PRESS MACHINE FOR UPSETTING PROCESS”. UTEHY Journal of Science and Technology, Vol. 23, Oct. 2019, pp. 46-51, http://tapchi.utehy.edu.vn/index.php/jst/article/view/52.