%0 Journal Article %A E. V. Radkevich %T A Schauder type estimate for a certain class of pseudo-differential operators %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1969 %V 24 %N 1 %U http://geodesic.mathdoc.fr/item/RM_1969_24_1_a16/ %G ru %F RM_1969_24_1_a16