%0 Journal Article %A I. I. Volkov %T Linear transformations of unbounded complex sequences %J Doklady Akademii Nauk %D 1967 %P 495-498 %V 173 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_173_3_a2/ %G ru %F DAN_1967_173_3_a2