1. Wells, A.A. and D. Post, (1958). Proceedings of the Society for Experimental Stress Analysis. Vol. XVI, No. 1 69–92.
2. Irwin, G.R. (1958), Proceedings of the Society for Experimental Stress Analysis. Vol. XVI, No. 1 93–96.
3. Dynamic fracture toughness
4. Kobayashi, A.S., (1979). Nonlinear and Dynamic Fracture Mechanics, ed. N. Perrone and S.N. Atluri, ASME AMD 35 19–36.
5. The determination of dynamic fracture toughness of AISI 4340 steel by the shadow spot method