1. For reviews, see: Costa, G., in ?Comprehensive Polymer Science?, Pergamon, Oxford, 1989, Vol. 4, Chap. 9.
2. Masuda, T., Higashimura, T., in ?Silicon-Based Polymer Science?, Am. Chem. Soc., Washington, D. C., 1990, Chap. 35.
3. Dumitrescu, S., Percec, V., Simionescu, C. I., J. Polym. Sci., Polym. Chem. Ed., 15, 2893 (1977)
4. Km�nek, I., Cimurov�, V., Nespurek, S., Makromol. Chem., 190, 1025 (1989)
5. Park, J.-W., Lee, J.-H., Cho, H.-N., Choi, S.-K., Macromolecules, 26, 1191 (1993)