%0 Journal Article
%A T.E. Hays
%T Irreducible semigroups are monotone.
%J Semigroup forum
%D 1975
%P 25-31
%V 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1975__10_134096/
%F SF_1975__10_134096