A Review on Integration of Ultrasonic Vibration in Machining of Difficult-to-Cut Materials. International Journal of Emerging Engineering and Technology, [S. l.], v. 4, n. 1, p. 21–26, 2025. DOI: 10.57041/64jgxd81. Disponível em: https://grsh.org/journal1/index.php/ijeet/article/view/45.. Acesso em: 4 sep. 2025.