1. I. M. Ward, “Mechanical Properties of Solid Polymers”, 2nd ed. (Wiley & Sons, New York, 1983).
2. A. F. Yee andR. A. Pearson,J. Mater. Sci.,21 (1986) 2462;
3. Idem. ibid.
21 (1986) 2475.
4. D. S. Parker, H. J. Sue, J. Huang, andA. F. Yee,Polymer,31 (1990) 2267.
5. A. F. Yee, R. A. Pearson, andH. J. Sue, “Fracture and Toughening Mechanisms in Polymers”, 7th International Conference on Fracture4 (1989) 2739.