%0 Journal Article
%A T.S. Blyth
%T On middle units in orthodox semigroups.
%J Semigroup forum
%D 1976
%P 261-266
%V 13
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1976__13_134219/
%F SF_1976__13_134219