1. Treloar, L. R. G., The Physics of Rubber Elasticity, 3rd edn, Oxford University Press, London, 1975.
2. Mark, J. E., Adv. Polymer Sci., 1982, 44, 1.
3. Flory, P. J., Br. Polymer J., 1985, 17, 96.
4. Erman, B., Br. Polymer J., 1985, 17, 140.
5. Brotzman, R. W. and Flory, P. J., Polymer Preprints, 1985, 26, 51.