1. Fracture characteristics of aluminum alloys;Kaufman;Aluminum Company of America ARL Tech. Paper No. 18,1965
2. R. E. Zinkham and J. H. Dedrick, Fracture behavior of aluminum alloys. Fracture, Vol. 6, Chap. 6, pp. 300–370. Academic Press, New York.
3. Effect of open holes on tensile strength and elongation of sheet specimens of some aluminum alloys;Hill;NACA Tech. Note No. TN 1974,1949
4. Fracture-toughness testing and its applications;Tiffany;ASTM Spec. Tech. Publ. No. 381,1965
5. Plane-strain crack toughness testing of high strength metallic materials;Brown;ASTM Spec. Tech. Publ. No. 410,1967