Banh, Long, Phan Nguyen, Cuong Ngo, and Tuan Nguyen. “Optimal Surface Roughness of Die Steels in Powder Mixed Electrical Discharge Machining Using Titan Powder”. Science and Technology Development Journal 19, no. 1 (March 31, 2016): 114-120. Accessed November 25, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/616.