1. Adamchuk, Y.B., Gerasimov, V.F., Yefimov, B.V., Zenkevich, V.S., Mostovoj, V.I., Pevzner, M.I., Chernyshov, A.A., Tsitovich, A.P.: Proc. Int. Conf. on the Peaceful Uses of Atomic Energy, Geneva, 1955, Vol. 4, p. 216. United Nations, New York, 1956.
2. Nikitin, S.Ya., Galanina, N.D., Ignatev, K.G., Okorokow, W.W., Sukhoruchkin, S.I.: Proc. Int. Conf. on the Peaceful Uses of Atomic Energy, Geneva, 1955, Vol. 4, pp. 224, 262. United Nations, New York, 1956.
3. Sokolovskij, V.V., Vladimirskij, V.V., Radkevich, I.A., Panov, A.A.: At. Energ. 2 (1957) 129; Sov. J. At. Energ. (Engl. Tran.) 2 (1957) .
4. Vladimirskij, V.V., Panov, A.A., Radkevich, I.A., Sokolovskij, V.V.: At. Energ. 5 (1958) 69; Sov. J. At. Energ. (Engl. Tran.) 5 (1958) 883. Exfor 40394.
5. Moore, M., S., Reich, C.W.: Phys. Rev. 118 (1960) 718. Exfor 12342.