“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”. Journal of Nanomaterials and Applications (JNA) 1, no. 1 (November 15, 2025): 33–42. Accessed December 4, 2025. https://jna.com.vn/index.php/home/article/view/8.