1. D.G. Harlow and S.L. Phoenix, International Journal of Fracture, 15 (1979) 321?336.
2. D.G. Harlow and S.L. Phoenix, Journal of Composite Materials, 12 (1978) 195?214.
3. D.G. Harlow and S.L. Phoenix, Journal of Composite Materials, 12 (1978) 314?334.
4. J.A. Kies, NRL Report 6034, United States Naval Research Laboratories, Washington, D.C. (1964).
5. A.G. Metcalfe and G.K. Schmitz, Proceedings of the ASTM, 64 (1964) 1075?1093.