1. ^isakyan, N.M., and Yazdovskiy, V.I., Eds. The First Manned Space Flights. Moscow, U.S.S.R. Academy of Sciences, 1962, pp.37-39(in Russian).
2. 4Bumazyan, A.I.; Nefyodov, Yu.G.; and Parin, V.V., Eds. Short Handbook on Space Biology and Medicine, Moscow, Meditsina, 1967, pp.314-315(inRussian).