  Following our previous papers concerning the quantization of the vacuum
Bianchi-IX model within or beyond the Born-Oppenheimer and adiabatic
approximation, we develop a more elaborate analysis of the dynamical properties
of the model based the vibronic approach utilized in molecular physics. As in
the previous papers, we restrict our approach to the harmonic approximation of
the anisotropy potential in order to obtain resoluble analytical expressions.
