Bui-Van HAI, Le-Duc HIEU, Nguyen-Phi TRUONG, Lam-Quang VINH, and Khong-Van Nguyen. 2025. “THE IMPACT OF CERTAIN WORKING PARAMETERS ON THE DRILLING PROCESS OF PERCUSSIVE-ROTARY DRILLING”. Journal of Applied Science and Technology 48 (December), 62-67. https://jst.utehy.edu.vn/index.php/jst/article/view/835.