Alazemi, Saud F. E. M. D., Irfan Hilmy, and Erry Y. T. Adesta. “Indentation Mechanism in Rotary Hammer Forging Process: Analytical and Numerical Approach”. International Journal of Engineering Materials and Manufacture 3, no. 4 (December 1, 2018): 190-199. Accessed July 19, 2019. http://deerhillpublishing.com/index.php/ijemm/article/view/78.