Minh-Thuan Hoang, and The-Van Tran. “DYNAMIC CHARACTERISTICS ANALYSIS FOR CLAW ROTOR OF VACUUM PUMP WITH CONSTANT AND VARIABLE LEADS”. UTEHY Journal of Applied Science and Technology, Vol. 38, June 2023, pp. 8-13, http://tapchi.utehy.edu.vn/index.php/jst/article/view/600.