%0 Journal Article
%A V. L. Selivanov
%T Hierarchies of hyperarithmetic sets and functions
%J Algebra i logika
%D 1983
%P 666-692
%V 22
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1983_22_6_a5/
%G ru
%F AL_1983_22_6_a5