1. I. E. Andrianova, V. A. Razorenova, G. A. Vitovskaya, et al., Radiobiologiya, No. 5, 703 (1976).
2. A. I. Beketov and D. I. Sapegin, in: Heparin [in Russian], Leningrad (1969), pp. 42?44.
3. A. K. Dondua and G. K. Dondua, in: Investigation of Cell Cycles and Nucleic Acid Metabolism during Cell Differentiation [in Russian], Moscow-Leningrad (1964), pp. 5?36.
4. V. P. Lozovoi, S. V. Kaznacheev, V. A. Kozlov, et al., Zh. Mikrobiol., No. 5, 108 (1975).
5. B. P. Lukashin, Byull. Éksp. Biol. Med., No. 7, 120 (1974).