1. Akkurt, M., 2005. Makine Elemanları. Cilt I, Birsen Yayınevi, 21.
2. ANSI/AGMA 2001-D04, 2004. American National Standard, Fundamental Rating Factors and Calculation Methods for Involute Spur and Helical Gear Teeth. American Gear Manufacturers Association, USA.
3. ASTM E92-17, 2017. Standard Test Methods for Vickers
Hardness and Knoop Hardness of Metallic Materials. ASTM International, USA.
4. Collin, R., Gunnarson, S. and Thulin, D., 1972. Mathematical model for predicting carbon concentration profiles of gas-carburized steel. Journal of the Iron and Steel Institute, 210 (10), 785-789.
5. Davis, J. R., 2002. Surface Hardening of Steels: Understanding the Basics, ASM International, Materials Park, 91.