1. 1) H.L. EISENSTEIN and E.N. SKINNER: ASTM Special Publ., 165 (1954), p.162
2. 3) E.R. LARSON and J. MILLER: ASME Trans., 74 (1952), p.765
3. 4) W.G. PATTON: Iron Age, 30 (1971) Sept., p.44
4. 5) E.M. CANTWELL, I.T. ROSENLUND, W.J. BARTH, and F.L. KINNER: SAE Paper, No. 690139 (1969)