Phenomenological description of superdeformed bands

Two different rotational formulae for description of normal deformed and su perdeformed nuclei are submitted by the definition of the softness and by t wo different representations of quantum algebra. With SD formula, near 80 S D bands in A similar to 190 and 150 regions are calculated. The results sho w that the E2 gamma -ray energies are fitted in high quality, and the pheno mena of the turnover in dynamical moment of inertia can be also reproduced well.