1. Brown, W. F., Jr. and Srawley, J. E., “Plane Strain Crack Toughness Of High Strength Metallic Materials,” ASTM STP 410 (1966).
2. Bush, A. J. and Wilson, W. K., “Determination Of Energy Release Rate For Biaxial Brittle Fracture Specimen,” (Available from DDC as AD611659) (Aug. 1964).
3. Bluhm, J. I., “The Effects Of Non-Linear Hertzian Deformations And Of Gage Length On The Experimental Determination Of Elastic Energy Release Rate,” U.S. Army Materials Research Agency, Watertown, MA, ASTM E-24 Comm. Mtg. (June 1966).
4. Tada, H., Paris, P. C. and Irwin, G. R., “The Stress Analysis of Cracks Handbook,” Del Research Corporation, Appendix A (1973).
5. Standard Method Of Test For Plane Strain Fracture Of Metallic Materials,” E399-72, ASTM Standards, Part 31 (July 1972).