1. Pattenden, N.J.: Nucl. Sci. Engin. 17 (1963) 371. Exfor 12025.
2. Poortmans, F., Ceulemans, H.: Nucl. Phys. A 97 (1970) 657. Exfor 20213.
3. Kvitek, J., Popov, Yu.P.: Nucl. Phys. A 154 (1970) 177. Exfor 40225 (1985).
4. Popov, Yu.P., Pshitula, M., Rumi, R.F., Stempinski, M., Florek, M., Furman, W.I.: Proc. 2-nd IAEA Conf. on Nuclear Data for Reactors, Helsinki, 1970, Vol. 1, p. 669. IAEA, Vienna, 1970. Exfor 40225.
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.