1. Y. Ide and J. L. White, J. Appl. Polym. Sci.,20, 2511?2531 (1976).
2. J. L. White, Polym. Eng. Rev.,1, No. 4, 297 (1981).
3. A. Ziabicki, Fundamentals of Fibre Formation: The Science of Fibre Spinning and Drawing, John Wiley, New York (1976).
4. D. V. Fil'bert, V. P. Murav'ea, et al., Khim. Volokna, No. 3, 18?21 (1968).
5. K. Dietrich and H. Versaumer, Faserf. Textilt.,26, No. 7, 347?352 (1975).