1. Bolotin, H.H., Chrien, R.E.: J. Bull. Am. Phys. Soc. 5 (1960) 18. Exfor 11988 (1977).
2. Danelyan, L.S., Efimov, B.V.: At. Energ. 16 (1964) 211; Sov. J. At. Energ. 14 (1963) 258. Exfor 40661.
3. Wynchank, S., Garg, J., Havens Jr., W.W., Rainwater, J.: Phys. Rev. 166 (1968) 1234. Exfor 11913.
4. Tellier, H., Alix, M., Dabbs, J.: Rept. CEA–N–1268, 1971. Exfor 20120.
5. Cauvin, B., Lottin, A., Michaudon, A., Newstead, C., Paya, D., Trochon, J.: Proc. 3-rd Conf. on Neutron Cross Sections for Technology, Knoxville, 1971, Vol. 2, p. 785. U.S. Atomic Energ. Comission, 1971. Exfor 20126.