%0 Journal Article %A P. A. Kirichuk %T An operator-valued function of Mittag-Leffler type and a %J Doklady Akademii Nauk %D 1990 %P 1039-1044 %V 315 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_315_5_a2/ %G ru %F DAN_1990_315_5_a2