Article, Influence of Copper Electrode Material on Surface Quality in EDM Drilling of Heat-Treated C45 Steel: Surface Quality in EDM Drilling of Heat-Treated C45 Steel. JNA [Internet]. 2025 Nov. 15 [cited 2025 Dec. 4];1(1):33-42. Available from: https://jna.com.vn/index.php/home/article/view/8