%0 Journal Article
%A V. V. V'yugin
%T Discrete classes of recursively enumerable sets
%J Algebra i logika
%D 1972
%P 243-256
%V 11
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1972_11_3_a0/
%G ru
%F AL_1972_11_3_a0