1. A Path Independent Integral and the Approximate Analysis of Strain Concentration by Notches and Cracks
2. and ASTM STP 514, 1 (1972),
3. and ASTM STP 560, 170 (1974).
4. ASTM Standard E813-81 in Annual Book of ASTM Standards, part 10, ASTM, Philadelphia, PA, 810 (1981).
5. ASTM Standard E813-89 in Annual Book of ASTM Standards, part 10, ASTM, Philadelphia, PA, 700 (1989).