1. EPRI Special Report. Flaw evaluation procedures: ASME Section XI, 1978. EPRI NP-719-SR. Electric Power Research Institute, Palo Alto, CA/USA.
2. Nanstad RK, Keeney JA, McCabe DE. Preliminary review of the basis for the KIc curve in the ASME code, 1993, ORNL/NRC/LTR-93/15, ORNL, TN/USA.
3. American Society of Mechanical Engineers. Boiler and pressure vessel code, 1998. Section XI, Article A-4000: material properties, New York/USA. p. 413–7.
4. American Society for Testing and Materials. Standard test method for plane-strain fracture toughness of metallic materials, E 399-90. Annual book of ASTM standards — Section 3: Metals test methods and analytical procedures, vol. 03.01. Metals — mechanical testing; elevated- and low-temperature tests. Metallography, American Society for Testing and Materials, West Conshohocken, PA/USA, 1998.
5. American Society of Mechanical Engineers. Boiler and pressure vessel code. Section 3, Article NB-2331, New York/USA, 1998.