1. Personal communication, Vanadium-Alloys Steel Company, Latrobe, Pa (1972).
2. Tentative method of test for plane strain fracture toughness of metallic materials, E-399-70 T,1970
3. Elements of stress analysis and stability of cracks,1972
4. Fracture characteristics of structural metals;Amateau,1972
5. Stress Corrosion Cracking in High Strength Steels and in Titanium and Aluminum Alloys,1972