1. A. Bohr and B. R. Mottelson, Nuclear Structure, Vol. 2: Nuclear Deformations, (Benjamin, New York, 1975).
2. S. G. Kadmenskii, V. P. Markushev, and V. I. Furman, Sov. J. Nucl. Phys. 35, 166 (1982).
3. S. G. Kadmenskii, V. P.Markushev, Yu. P. Popov, and V. I. Furman, Sov. J. Nucl. Phys. 39, 4 (1984).
4. O. P. Sushkov and V. V. Flambaum, Sov. Phys. Usp. 25, 1 (1982).
5. S. G. Kadmensky, Phys. At. Nucl. 68, 1968 (2005).