%0 Journal Article %A V. P. Maslov %T Application of the method of ordered operators to obtain exact solutions %J Teoretičeskaâ i matematičeskaâ fizika %D 1977 %P 185-209 %V 33 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1977_33_2_a3/ %G ru %F TMF_1977_33_2_a3