1. Pevzner M.I., Adamchuk, Yu.V., Danelyan, L.S., Efimov, B.V., Moskalev, S.S., Muradyan, G.V.: Zh. Eksp. Teor. Fiz. 44 (1963) 1187; JETP 17 (1963) 803.
2. Shwe, H., Cotè, R.E.: Phys. Rev. 179 (1969) 1148. Exfor 11914.
3. Mughabghab, S.F., Chrien, R.E., Wasson, O.A., Cole, G.W., Bhat, M.R.: Phys. Rev. Lett. 26 (1971) 1118. Exfor 10229.
4. Weigmann, H., Rohr, G., Winter, W.: Proc. 3rd Conf. on Neutron Cross Sections for Technology, Knoxville, 1971, Vol. 2, p. 749. U.S. Atomic Energ. Comission, 1971.
5. Wasson, O.A., Allen, B.J., Winters, R.R., Macklin, R.L., Harvey, J.A.: Phys. Rev. C 7 (1973) 1532. Exfor 10748, 10747.