%0 Journal Article %A I. I. Ibragimov %A A. S. Dzhafarov %T A bound for a differential operator in the class of entire functions of finite degree %J Doklady Akademii Nauk %D 1963 %P 533-536 %V 152 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_152_3_a6/ %G ru %F DAN_1963_152_3_a6