%0 Journal Article
%A I. M. Sheinbergas
%T Simple bases and the number of functions in certain classes introduced by Post
%J Matematičeskie zametki
%D 1970
%P 105-114
%V 8
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1970_8_1_a11/
%G ru
%F MZM_1970_8_1_a11