%0 Journal Article %A O. G. Smolyanov %A J. Kupsch %T Asymptotic Decoherence in Infinite-Dimensional Quantum Systems with Quadratic Hamiltonians %J Matematičeskie zametki %D 2003 %P 143-148 %V 73 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2003_73_1_a14/ %G ru %F MZM_2003_73_1_a14