2026. Optimization of Gear Sprocket Surface Hardness through a Combination of Ice Water Quenching and Shot Peening with Pressure Variations. Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin. 16, 1 (Mar. 2026), 70–76. DOI:https://doi.org/10.35814/nttrpa77.