%0 Journal Article
%A G. S. Makanin
%T The problem of solvability of equations in a free semigroup
%J Doklady Akademii Nauk
%D 1977
%P 287-290
%V 233
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1977_233_2_a6/
%G ru
%F DAN_1977_233_2_a6