1. A.Bohr and B.R.Motteslon, Phys.Scr. 10A(1974)13.
2. For example, see Proc.Workshop on Electromagnetic Properties of High-Spin Nuclear Levels, Israel, 1984, ed. G.Goldring and M.Hass (published as Ann. Israel Physical Society, vol.7).
3. For eaxmple, see A. Bohr and B.R. Mottelson, Nuclear Structure, vol.2 (Benjamin, New York, 1975).
4. A.Bohr, Mat.Fys. Medd.Dan.Vid. Selsk.26(1952)no.14.
5. G. Andersson et al, Nucl.Phys. A268(1976)205.