%0 Journal Article
%A K.K.H. Butler
%T On (0,1)-matrix semigroups.
%J Semigroup forum
%D 1971
%P 74-79
%V 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1971__3_133847/
%F SF_1971__3_133847