1. Punch-die clearances — their effects on stamping forces;Biegel;Tool Mfg. Engr.,1962
2. Good stamping starts with the dies;Hugo;Iron Age,1969
3. Higher speeds for punch processes;Cook;Tool Mfg. Engr.,1962
4. Blanking and piercing without any burr;Lange;Annals. CIRP,1978
5. Press and die alignment — key to stamping efficiency;Eary;Tool Mfg. Engr.,1962