1. P.W. Bridgman: Studies in Large Flow and Fracture, McGraw-Hill, New York, NY, 1956.
2. J.C. Earl and K.D. Brown: Eng. Fract. Mech., 1976, vol. 8, pp. 599–611.
3. M. Alves and N. Jones: J. Mech. Phys. Solids, 1999, vol. 47, pp. 643–67.
4. J.W. Hancock and D.K. Brown: J. Mech. Phys. Solids, 1983, vol. 31, pp. 1–24.
5. G. La Rosa, G. Mirone, and A. Risitano: Proc. XXVIII Italian Association for Stress Analysis Annual Congr., Vicenza, Sept. 1999, AIAS, Vicenza, Italy, 1999, pp. 371–80 (in Italian).