1. Cold forging technology 1990 in Europe, applications, state of the art, developments;Geiger,1990
2. Forming of toothed parts by cold forging;Leykamm,1981
3. Cold forging of toothed parts;Burgdorf,1975
4. Investigation of physical and numerical modelling of bevel gear forming;Meidert,1991
5. Computer-aided design of cold forging punches;Westphal,1992