1. A. Koster, in: Proceedings of the IAEA Symposium on Prompt Fission Neutron Spectra, Vienna, Aug. 25?27 (1971), p. 19.
2. A. Smith, Nucl. Sci. and Eng.,44, No. 3, 439 (1971).
3. L. Green, J. Mitchell, and N. Steen, Nucl. Sci. and Eng.,50, No. 3, 257 (1973).
4. N. V. Kornilov, Preprint FÉI-276, Obninsk (1971).
5. D. Abramson et al., in: Proceedings of the Conference on Neutron Physics [in Russian], Pt. 3, ONTI FÉI (1974), p. 46.