1. Bohr, A., Mottelson, B.: Nuclear Structure, Vol. II, New York: Benjamin 1975
2. Zelevinskii, V.G.: Sov. J. Nucl. Phys.22, 565 (1975)
3. Ripka, G., Blaizot, J.P., Kassis, N.: Heavy Ions High Spin State and Nuclear Structure, Vol. I, p. 445. IAEA Vienne 1975
4. Stamp, A.P.: Z. Physik A284, 305 (1978)
5. Troudet, T., Arvieu, R.: submitted to Physics Letters