1. Weis-Fogh, T., and Anderson, S. O., Chemistry and Molecular Biology of the Inter-cellular Matrix, (edit. by Balazs, E. A.), 1, 671 (Academic Press, London 1970).
2. Weis-Fogh, T., and Anderson, S. O., Nature, 227, 718 (1970).
3. Flory, P. J., Principles of Polymer Chemistry (Cornell University Press, Ithaca, 1953).
4. Hoeve, C. A. J., and Flory, P. J., J. Am. chem. Soc., 80, 6523 (1958).
5. Hoeve, C. A. J., and Flory, P. J., J. Polym. Sci., 60, 155 (1962).