Abbas, Abdalla, and Khaled Abou-El-Hossein. “Investigation of Drill Bit Temperature During Automatic Bone Drilling”. International Journal of Engineering Materials and Manufacture 3, no. 4 (December 1, 2018): 245-250. Accessed February 19, 2019. http://deerhillpublishing.com/index.php/ijemm/article/view/85.