%0 Journal Article %A R. V. Goldshtejn %A E. I. Shifrin %T Comparison theorems for a class of pseudodifferential equations and their applications %J Doklady Akademii Nauk %D 1982 %P 1113-1116 %V 262 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1982_262_5_a20/ %G ru %F DAN_1982_262_5_a20