1. 64Bea: Beaudry, B. J. and Daane, A. H.,J. Less-Common Met., 6, 322 (1964).
2. 66Lun: Lundin, C. E., AD-633558 (also given as DRI-2326), final report, Denver Research Institute, University of Denver, Denver, CO (1966).
3. 68Yak: Yakel, H. L., ORNL-4370, Oak Ridge National Laboratory, Oak Ridge, TN (Oct 1968).
4. 69Yak: Yakel, H. L., ORNL-4470, Oak Ridge National Laboratory, Oak Ridge, TN (Oct 1969).
5. 73Isa: Isaacs, L. L.,Phys. Rev. B, 8, 3301 (1973).