1. Ivin, K. J. and Rose, J. B., Adv. Macromol. Chem., 1 (1968), 335.
2. Tokura, N., In: Encyclopedia of Polymer Science and Technology, Vol. 9, ed. H. Mark, New York, Interseience, 1968, p. 460.
3. Fettes, E. M. and Davis, F. O., In: High Polymers, Vol. 13, eds R. A. V. Raff and K. Doak, New York, Interseience, 1962, p. 225.
4. Colombo, P., Fontana, J. and Steinberg, M., J. Polym. Sci., Part A-l, 6 (1968), 3201.
5. Brown, J. R. and O’Donnell, J. H., J. Polym. Sci., Part A-l, 10 (1972), 1997.