1. N. K. Kochetkov, B. A. Dmitriev, and A. Ya. Chernyak, Bioorg. Khim.,3, No. 6, 752 (1977).
2. N. E. Byramova, L. V. Mochalova, I. M. Belyanchikov, and N. V. Bovin, J. Carbohydr. Chem.,10, No. 4, 691 (1991).
3. L. F. Awad, E. S. H. Ashry, and C. Schuerch, Carbohydr. Res.,122, No. 1, 69 (1983).
4. Yu. A. Tsvetkov, L. V. Bakinovskii, and N. K. Kochetkov, Bioorg. Khim.,14, No. 10, 1428 (1988).
5. T. V. Zemlyanukhina and N. V. Bovin, Bioorg. Khim.,16, No. 8, 1096 (1990).