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2. J.R. Rice, P.C. Paris, J.G. Merkle, Some further results of J-integral analysis and estimates, in: Progress in flaw growth and fracture toughness testing. ASTM STP 536. American Society for Testing and Materials; 1973. pp. 231–245.
3. J.D.G. Sumpter, C.E. Turner, Method for laboratory determination of JC (contour integral for fracture analysis), in: Cracks and fracture. ASTM STP 601. American Society for Testing and Materials; 1976, pp. 3–18.
4. ASTM E1820-20a. Standard Test Method for Measurement of Fracture Toughness. ASTM International, West Conshohocken, PA, 2020.
5. ISO15653. Metallic materials-Method of test for the determination of quasi-static fracture toughness of welds. International Organization of Standardization, Switzerland, 2018.