%0 Journal Article %A Yu. A. Kashlev %T Application of the method of double-time Green's functions in the theory of migration %J Teoretičeskaâ i matematičeskaâ fizika %D 1973 %P 235-250 %V 14 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1973_14_2_a8/ %G ru %F TMF_1973_14_2_a8