1. V. V. Korshak, Izv. AN SSSR, Otd. Khim. N., 753 (1951).
2. V. V. Korshak and S. V. Vinogradova, Izv. AN SSSR, Otd. Khim. N., 1109 (1952).
3. V. V. Korshak and S. V. Vinogradova, Izv. AN SSSR, Otd. Khim. N., 756 (1951).
4. P. J. Flory, J. Amer. Chem. Soc.,62, 2255, 2261 (1940).
5. V. V. Korshak and V. V. Golubev, Izv. AN SSSR, Otd. Khim. N., 379 (1949).