%0 Journal Article
%A P.M. Higgins
%T The Mitsch order on a semigroup.
%J Semigroup forum
%D 1994
%P 261-266
%V 49
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1994__49_2_135351/
%F SF_1994__49_2_135351