1. V. M. Gorbachev, Yu. S. Zamyatnin, and A. A. Lbov, Interaction of Radiation with Nuclei of Heavy Elements, and Nuclear Fission (Handbook) [in Russian], Atomizdat, Moscow (1976).
2. M. Ya. Kondrat'ko, V. N. Korinets, and K. A. Petrzhak, At. Energ.,34, 52 (1973).
3. M. Ya. Kondrat'ko, V. N. Korinets, and K. A. Petrzhak, At. Energ.,35, 214 (1973).
4. M. Ya. Kondrat'ko, V. N. Korinets, and K. A. Petrzhak, At. Energ.,40, 72 (1976).
5. O. V. Bogdankevich and F. A. Nikolaev, Work with a Bremsstrahlung Beam [in Russian], Atomizdat, Moscow (1964).