1. (1) Christensen, R. M., Theory of Viscoelasticity, (1982), Academic Press Inc.
2. (2) Gotoh, J., Horie, H., Misawa, A. and Takashi, M., Photoviscoelastic Method for Time Dependent Stress and Strain Analysis under Non-proportional Loading, Proc. 1995 SEM Spring Conf. on Exp. Mech., (1995), p. 234.
3. (3) Ayame, D., Gotoh, J., Misawa, A. and Takashi, M., Photoviscoelastic Stress Analysis in a Strip Plate under Rolling Contact, Proc. 1st Int. Conf. on Mech. of Time Dependent Materials, (1995), p. 218.
4. (4) Ayame, D., Gotoh, J. and Takashi, M., Stress Analysis around Contact Region in Viscoelastic Plate with Rigid Cylinder, Proc. 72nd JSME Spring Annual Meeting (VI), (1995), p. 102.
5. (5) Kunio, T., Miyano, Y. and Sugimori, S., Fundamentals of Photoviscoelastic Technique for Analysis of Time and Temperature Dependent Stress and Strain, Applied Stress Analysis, T. H. Hyde and E. 011erton, Eds., (1990), p. 588, Elsevier Applied Science.