1. Plane atrain crack toughness testing of high-strength metallic materials;Brown;ASTM Spec. Tech. Publ. No. 410,1967
2. 71st A. Mng. American Society of Testing and Materials,1968
3. Slow-bend Kic testing of medium-strength high-toughness steels;Rolfe;AD 817373L,1967
4. Fracture toughness of turbine-generator rotor forgings;Greenberg;J. Engng Frac. Mech.,1970