1. Gandhi, M. V. and Thompson, B. S., inSmart Materials and Structures, Chapman and Hall, London, 1992, pp. 70?88.
2. Du, S. Y. and Leng, J. S.,Advances in Mechanics 4, 1992, 496.
3. Du, S. Y. and Leng, J. S.,Aerospace Materials and Technology 5, 1992, 14.
4. Choi, Y., Sprecher, A. F., and Conard, H.,J. Intel. Mat. Syst. and Struc. 1(1), 1990, 91.
5. ASTM Standard E756-83, The American Society for Testing of Materials.