%0 Journal Article %A V. F. Los' %T Superoperator method in the theory of an~oscillator which interacts weakly with a~medium. II.~Concrete interaction mechanisms %J Teoretičeskaâ i matematičeskaâ fizika %D 1978 %P 247-262 %V 35 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1978_35_2_a10/ %G ru %F TMF_1978_35_2_a10