%0 Journal Article %A M. K. Fage %T Operator-analytical functions of an independent variable %J Doklady Akademii Nauk %D 1957 %P 1008-1011 %V 112 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_112_6_a7/ %G ru %F DAN_1957_112_6_a7