Saleh, Ali Hassan, and Ammer Khalaf Ali. “Development Technique for Deep Drawing Without Blank Holder to Produce Circular Cup of Brass Alloy”. International Journal of Engineering & Technology 4, no. 1 (January 29, 2015): 187–195. Accessed May 5, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/3516.