1. J.R. Rice and M.A. Johnson: inInelastic Behavior of Solids, M.F. Kanninen, W.G. Adler, A.R. Rosenfield, and R.J. Jaffee, eds., McGraw-Hill, New York, NY, 1970, pp. 641–72.
2. J.R. Rice and D.M. Tracey:J. Mech. Phys. Solids, 1969, vol. 17, pp. 201–17.
3. J.F. Knott:Conf. Proc: Micromechanisms of Crack Extension (Mechanics and Physics of Fracture II), Cambridge, MA, 1980,in Met. Sci., 1980, vol. 14, pp. 327–36.
4. T.B. Cox and J.R. Low:Metall. Trans. A, 1974, vol. 5, pp. 1457–70.
5. J.A. Psioda: Ph.D. Thesis, Carnegie Mellon University, Pittsburgh, PA, 1977.