1. R. C. Houtz, Text. Res. J.,20, 786?801 (1950).
2. I. V. Koshelev, V. N. Sokolovskii, et al., Khim. Volokna, No. 5, 8?11 (1993).
3. A. I. Clark and I. E. Bailey, Nature,234, 259 (1971).
4. E. Fittser and V. Fros, Khim. Volokna, No. 2, 14?17 (1992).
5. Yu. A. Shlyapnikov, V. B. Miller, et al., Vysokomolek. Soedin.,2, No. 9, 1409?1412 (1960).