%0 Journal Article
%A I. A. Lavrov
%T Certain properties of retracts of Post numerations
%J Algebra i logika
%D 1974
%P 662-675
%V 13
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1974_13_6_a3/
%G ru
%F AL_1974_13_6_a3