%0 Journal Article %A V. N. Kolokoltsov %T Application of quasi-classical methods in a study of the Belavkin quantum filtration %J Matematičeskie zametki %D 1991 %P 153-156 %V 50 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1991_50_5_a21/ %G ru %F MZM_1991_50_5_a21