1. V. Ya. Brodskii, in: Nucleic Acids and Nucleoproteins [in Russian], Moscow (1961), p. 204.
2. G. P. Georgiev, in: Biosynthesis of Protein and Nucleic Acids [in Russian], Moscow (1965), p. 312.
3. M. I. Lerman, Dokl. Akad. Nauk SSSR,155, No. 4, 950 (1964).
4. I. M. Limarenko, Uspekhi Sovr. Biol.,43, No. 3, 319 (1957).
5. A. D. Luzhkov, R. A. Mukhamedshin, and I. K. Lagert, Veterinariya, No. 9, 71 (1967).