1. P. C. Simms, F. A. Rickey and R. K. Popli, invited paper to this conference.
2. The Variable Moment of Inertia (VMI) Model and Theories of Nuclear Collective Motion
3. System of Levels in Even-Even Nuclei
4. Neutron capture gamma-ray spectroscopy;Talmi,1978
5. G. Scharff-Goldhaber, Proc Pittsburgh Conference, 1957, ed. S. Meshkov, p. 447.