%0 Journal Article %A M. I. Kanovich %T Reducibility via general recursive operators %J Doklady Akademii Nauk %D 1983 %P 793-796 %V 273 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1983_273_4_a4/ %G ru %F DAN_1983_273_4_a4