1. A. E. Gurvich and E. V. Lekhttsind, Byull. Éksp. Biol. Med., No. 12, 752 (1981).
2. J. Turkova, Affinity Chromatography [Russian translation], Moscow (1980), pp. 290?292.
3. K. Brocklehurst, J. Carlsson, M. P. J. Kierstan, et al., Biochem. J.,133, 573 (1973).
4. G. L. Ellman, Arch. Biochem.,82, 70 (1959).
5. J. W. Evelengh, J. Chromatogr.,159, 128 (1978).