Nguyen, Thanh Trung, Truong Cong Tuan, and Toan Thang Vu. “A Case Study of Surface Roughness Improvement for C40 Carbon Steel and 201 Stainless Steel Using Ultrasonic Assisted Vibration in Cutting Speed Direction”. Engineering, Technology & Applied Science Research 14, no. 4 (August 2, 2024): 15068–15073. Accessed October 4, 2024. https://etasr.com/index.php/ETASR/article/view/7552.