1. F. L. Parkinson, Evaluation of High Energy Rate Forged Gears with Integral Teeth, Western Gear Corporation, Lynwood, California, U.S. Army Contract DD44-177-DMC-321(T).
2. Forming of Spur Gears on a High Speed Forge;Kobyskovsky;Kufnechno-Shtamponochone Proifnod stuo,1967
3. The Quality of Hot Forged Spur Gear Forms Part I: Mechanical and Metallurgical Properties;Abdel Rahman;Int. J. Mach. Tool Des. Res.,1981
4. Analysis of closed-die forging of gear-like elements;Grover,1984