1. V. S. Apekin, Byull. éksp. Biol., No. 1, 77 (1964).
2. V. M. Barabanov, In the book: Proceedings of a Conference of Junior Scientists of the Institute of Experimental Biology [in Russian], Moscow (1965), p. 8.
3. E. O. Vyazov, The Immunology of Embryogenesis [in Russian], Moscow (1962).
4. M. G. Zaks and M. M. Sokolova, Doklady Akad. Nauk SSSR, 139, No. 6, 149 (1961).
5. B. V. Konyukhov, A Morpho-immunological Study of Organs of Animals in Embryogenesis. Author's abstract of candidate dissertation. Moscow (1966).