1. Cold forming in gear manufacture;Stickels;Metals Engineering Quarterly,1974
2. Apparatus and method for cold extrusion of gear;Samanta,1974
3. Helical gear: A noble method of manufacturing it;Samanta,1976
4. A Study on the helical-gear forming by cold extrusion;Choi;J. of KSME,1991
5. Accuracy in transferring the tool geometry to the product in the extrusion of helical-gear;Omori;J. of the JSTP,1991