%0 Journal Article %A A. Montorsi %A M. Rasetti %T $Q$-Symmetry in Condensed Matter Physics: Effective Generalized Hubbard Model with Quantum Symmetry %J Zapiski Nauchnykh Seminarov POMI %D 1998 %P 69-79 %V 251 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1998_251_a6/ %G en %F ZNSL_1998_251_a6