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2. N. I. Naimark, Khim. Volokna, No. 5, 50?52 (1977).
3. S. P. Papkov, Physico-chemical Bases of the Manufacture of Artificial and Synthetic Fibres [in Russian], Khimiya, Moscow (1972).
4. Yu. P. Kozhevnikov, A Quantitative Description of Diffusion in Wet Spinning of Ma-made Fibres [in Russian], NIITÉKhIM, Moscow (1971).
5. M. S. Mezhirov, Khim. Volokna, No. 4, 17?19 (1972).