%0 Journal Article
%A A. N. Degtev
%T Recursive-combinatorial properties of subsets of natural
%J Algebra i logika
%D 1990
%P 303-314
%V 29
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1990_29_3_a2/
%G ru
%F AL_1990_29_3_a2