1. Averbach, B.L.A., 1977, Film-forming capability of chitosan, in: “Proc. Ist. In Conf. Chitin/Chitosan, R.A.A. Muzzarelli and E.R. Pariser, ed., MIT Sea Grant Report MITSG 78–7.
2. Dusek, K. and Prins, W., 1969, Structure and elasticity of non-
3. crystalline polymer networks, Adv. Polymer Sci., 6: 1.
4. Fasina, A.B., 1977, Elasticity of rubbery networks in the region of zero strain, Rubber Chem. Tech., 50: 780.
5. Ferry, J.D. and Kan, H.C., 1978, Interpretation of deviations from neo-1lookean elasticity by a two-network model with cross-links and trapped entanglements, Rubber Chem. Tech., 51: 731.