1. A. Zyabitskii, Theoretical Principles of Fiber Spinning [in Russian], Khimiya, Moscow (1979).
2. N. K. Zhiganov, V. I. Yankov, E. I. Alekseev, and A. V. Genis, Khim. Volokna, No. 4, 18?20 (1988).
3. V. I. Eliseev and L. A. Fleer, Prikl. Mekh. Tekh. Fiz., No. 6, 148?153 (1988).
4. A. V. Genis, D. V. Fil'bert, A. A. Sindeev, and O. G. Korovitsyn, Khim. Volokna, No. 6, 30?32 (1978).
5. D. V. Ivanyukov and M. L. Fridman, Polypropylene [in Russian], Khimiya, Moscow (1974).