1. A path independent integral and the approximate analysis of strain concentrations by notches and cracks;Rice;Journal of Applied Mechanics,1968
2. The J-integral as a fracture criterion;Begley,1972
3. Test results from J-integral studies: An attempt to establish a JIc, testing procedure;Landes,1974
4. Chapter 2 of: Post yield fracture mechanics;Turner,1979
5. Standard Test for JIc, a Measure of Fracture Toughness,1981