1. Fracture toughness testing of limestone;Schmidt;Expl Mech.,1976
2. KIc and JIc of Westerly granite—effects of thickness and in-plane dimensions;Schmidt,1979
3. Plastic zone near a crack and fracture toughness;Irwin,1960
4. Yielding of steel sheetings containing slits;Dugdale;J. Mech. Phys. Solids,1960
5. Fundamentals of Fracture Mechanics;Knott,1973