%0 Journal Article
%A E. S. Lyapin
%T Independence of subsemigroups of a semigroup
%J Doklady Akademii Nauk
%D 1969
%P 1229-1231
%V 185
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1969_185_6_a6/
%G ru
%F DAN_1969_185_6_a6