%0 Journal Article %A S. A. Vugal'ter %A G. M. Zhislin %T On the discrete-spectrum of the given $SO(2)$ symmetry of many-particle systems with the potential field and the homogeneous magnetic field %J Zapiski Nauchnykh Seminarov POMI %D 1992 %P 28-41 %V 197 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1992_197_a1/ %G ru %F ZNSL_1992_197_a1