1. Georgiev, G. P., and Mantieva, V. L., Biokhimiya, 27, 949 (1962).
2. Georgiev, G. P., Samarina, O. P., Lerman, M. I., and Smirnov, M. N., Nature, 200, 1291 (1963).
3. Georgiev, G. P., in Molecular Biology, Problems and Perspectives, edit. by Braunstein, A. E., 109 (Moscow, 1964).
4. Samarina, O. P., Lerman, M. I., Tumanjan, V. D., Ananieva, L. N., and Georgiev, G. P., Biokhimiya, 30, 880 (1965).
5. Zimmermann, E., and Turba, F., Biochem. Z., 339, 469 (1964).