1. L. A. Vol'f, editor, Fibres with Special Properties [in Russian], Khimiya, Moscow (1980).
2. Z. A. Rogovin and L. S. Gal'braikh, Chemical Transformations and Modification of Cellulose [in Russian], Khimiya, Moscow (1979).
3. A. A. Lysenko et al., Zh. Prikl. Khim., 52, No. 7, 1596?1599 (1970).
4. A. A. Lysenko, V. É. Lazaryants, et al., Zh. Prikl. Khim., 55, No. 2, 417?420 (1982).
5. N. G. Polyanskii, G. V. Gorbunov, and N. A. Polyanskaya, Methods of Ion-exchange Resin Investigation [in Russian], Khimiya, Moscow (1976).