1. ASME, 1986. ASME Boiler and Pressure Vessel Code, Section III, Division 1.
2. ASTM, 1998a. ASTM E 813-88D: standard test method for Jic, a measure of fracture toughness. Annual Book of ASTM Standards, vol. 03.01.
3. ASTM, 1988b. ASTM E 1221-88: standard test method for determining plane-strain crack arrest fracture toughness, KIa, of ferritic steels. Annual Book of ASTM Standards, vol. 03.01.
4. ASTM, 1990. ASTM E 399: standard test method for plane-strain fracture toughness of metallic materials. Annual Book of ASTM Standards, vol. 03.01.
5. British Standards Institution, 1977. BS 5447: method of plane strain fracture toughness testing.