1. Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials. Annual Book of ASTM Standards, sect. 3, Vol. 3. 1. 1988. Designation E399-83, 480-504.
2. Standard Test Method for JIC, a Measure of Fracture Toughness Loc. cit [1], Designation E813-87, 686-700.
3. Standard Test Method for Determining J-R Curves, Loc cit. [1], Designation E1152-87, 800-810.
4. Determination of curves for the pressure vessel material A533 B1 using the potential-drop technique and the multispecimen method
5. Ed. Stahlschlüssel, Key to Steel (1986) Verlag Stahlschlüssel Wegst GmbH, D-7142 Marbach, ISBN3-922599-04-4.