1. The flow stress of carbon steel in warm metalworking;Osakada;J. Mech. Work. Tech.,1978
2. Flow-stress test and cold forging pressure of carbon steels;Kudo;J. Japan Soc. Tech. Plasticity,1965
3. Effect of compression upon fracture of a carbon steel;Kudo;ibid,1967
4. A cold upsettability test;Kudo;Ann. CIRP,1968
5. Cold upsettability tests;de Meester;ibid,1979