“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), vol. 1, no. 1, Nov. 2025, pp. 33-42, https://doi.org/10.65273/hhit.jna.2025.1.1.33-42.