1. D. Grime and I. M. Ward, Trans. Faraday Soc.,54, 959 (1958).
2. T. R. Manley and D. A. Williams, Polymer,10, No. 5, 339 (1969).
3. L. D'Esposito and F. L. Koenig, J. Polymer Sci., Polymer Phys.,14, No. 10, 1731 (1976).
4. P. M. Pakhomov, I. I. Novak, and V. E. Korsukov, Preprint of the International Symposium on Chemical Fibers, Vol. I, Kalinin (1977), p. 43.
5. S. A. Baranova, V. É. Geller, L. V. Papulova, and M. V. Shablygin, Khim. Volokna, No. 2, 17 (1970); S. A. Baranova, V. É. Geller, É. M. Aizenshtein, A. B. Pakshver, and M. V. Shablygin, Khim. Volokna, No. 5, 17 (1971).