1. P.D. LaFLEUR, Editor, NBS Tech. Note 508, 1969.
2. P.D. LaFLEUR, D. A. BECKER, Editors, NBS Tech. Note 548, 1970.
3. ASTM Publication E-262-65T, «Measuring Thermal Neutron Flux by Radioactivation Techniques», published by the American Society for Testing and Materials (ASTM), Philadelphia, Pa., 1965.
4. C. M. LEDERER, J. M. HOLLANDER, I. PERLMAN, Table of Isotopes, 6th ed. Wiley, 1967.
5. J. MOTEFF, Nucleonics, 20 (December 1962) 56.