1. Finite elements for determination of crack tip elastic stress intensity factors;TRACEY;Eng. Fract. Mech.,1972
2. Calculation of stress intensity factors at crack tips using special finite elements;BLACKBURN,1973
3. The BERSAFE finite element system;HELLEN;Computer Aided Design,1974
4. On the method of virtual crack extension;HELLEN;Int. J. Numer. Meth. Eng.,1975
5. The calculation of stress intensity factors in two and three dimensions using finite elements;HELLEN,1975