1. A.R.C. Westwood, CM. Preece, and M. H. Kamdar:Fracture, Academic Press, New York, NY, 1971, vol. 3, pp. 589–644.
2. J.J. Gilman:Phil. Mag., 1972, vol. 26, pp. 801–12.
3. M. H. Kamdar:Prog. in Matl. Sci., B. Chalmers, J.W. Christian, and T. B. Massalski, eds., Pergamon Press, Oxford, 1973, vol. 15, pp. 289–374.
4. R.M. Latanision and H. Opperhauser, Jr.:Metall. Trans., 1974, vol. 5, pp. 483–92.
5. M.O. Spiedel:Metall. Trans. A, 1975, vol. 6A, pp. 631–51.