%0 Journal Article %A E. A. Polyakov %T Recursive subsets of sets of recursive functions %J Doklady Akademii Nauk %D 1968 %P 1262-1264 %V 183 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1968_183_6_a6/ %G ru %F DAN_1968_183_6_a6