1. Einsatzstähle—Normung und Entwicklungstendenzen, ATTT/AWT-Tagung Einsatzhärtung;Spitzer,1998
2. N.N. DIN EN 10084:2008. Carburizing Steels,2008
3. N.N. ISO 683-11: Edition 1987. Heat-Treatable Steels, Alloy Steels and Free-Cutting Steels, Part 11: Wrought Case-Hardening Steels,1981
4. N.N. DIN 3990 1-5: Edition 1987:12. Calculation of Load Capacity of Cylindrical Gears; Endurance Limits and Material Qualities,1987