1. H. W. Swift:Sheet Met. Ind., 1954, vol. 31, p. 817.
2. S. S. Hecker:Met. Eng. Q., November 1974, vol. 14, p. 30.
3. A. K. Ghosh:Met. Eng. Q., August 1975, vol. 15, p. 53.
4. R. A. Ayres, W. G. Brazier, and V. F. Sajewski:J. Appl. Metalwork., vol. 1, no. 1, 1979 p. 41.
5. Correlation of Deep Drawing Press Performance with Tensile Properties ASTM STP 390, Amer. Soc. Testing Mats., 1965.