CHU, Ngoc Hung. Comparison of Deep Drilling Efficiency between Ultrasonic Vibration-Assisted Drilling and Conventional Drilling based on Specific Energy Consumption. Engineering and Technology For Sustainable Development, [S. l.], v. 35, n. 5, p. 034–042, 2025. DOI: 10.51316/jst.186.etsd.2025.35.5.5. Disponível em: https://jst.vn/index.php/etsd/article/view/1124. Acesso em: 25 oct. 2025.