%0 Journal Article
%A S. A. Rusakov
%T A generalization of Post's theorem
%J Doklady Akademii Nauk
%D 1970
%P 1008-1011
%V 193
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1970_193_5_a11/
%G ru
%F DAN_1970_193_5_a11