1. 1) A. A. Bergman, et al., Proc. 1 st Int. Conf. on Peaceful Uses At. Energy, United Nations, Vol. 4, 135 (1955).
2. 2) R. R. Slovacek. et al., Nucl. Sci. Eng., 62, 455 (1977).
3. 3) V. F. Gerasimov, et al., Proc. V Int. Semin. on Interaction of Neutrons with Nuclei, ISINN-5, Dubna, p. 348 and p. 361 (1977).
4. 4) K. Kobayashi, et al., Nucl. Instrum. Methods Phys. Res. A, 385, 145 (1997).
5. 5) K. Kobayashi, et al., Nucl. Sci. Eng., 99, 157 (1988).