%0 Journal Article
%A G. S. Makanin
%T Recognizing the rank of coefficientless equations in a free semigroup
%J Doklady Akademii Nauk
%D 1978
%P 851-854
%V 243
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1978_243_4_a7/
%G ru
%F DAN_1978_243_4_a7