%0 Journal Article %A V. B. Korotkov %T On integral operators %J Doklady Akademii Nauk %D 1970 %P 1267-1269 %V 195 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_195_6_a3/ %G ru %F DAN_1970_195_6_a3