Taufik, A., P. Pratikto, A. Suprapto, and A. A. Sonief. “Analysis of the Influence of Hot Rolled Plate Steel Treatment Using Temper and Quench-Temper Method on Vickers Hardness Number Enhancement”. Eastern-European Journal of Enterprise Technologies, vol. 4, no. 12(112), Aug. 2021, pp. 18-24, doi:10.15587/1729-4061.2021.233349.