1. G.I. Abdeev, Some Features of Immunity to Primary Tumors. Author's abstract of dissertation, Moscow, 1953 [In Russian].
2. G.P. Airapet'yan, Byull. Éksptl. Biol. i Med., No. 11, 85–92 (1957).
3. V.V. Gorodilova and L.V. Shershul'skaya, Problems of the Pathogenesis and Immunology of Tumors, pp. 115–125, Moscow, 1956, [In Russian].
4. M.M. Kapichnikov, Byull. Éksptl. Biol. i Med., No. 3, 63–66 (1956). Original Russian pagination. See C.B. Translation.
5. V.K. Kozlov, Byull. Éksptl. Biol. i Med., No. 12, 86–90 (1957). Original Russian pagination. See C.B. Translation.