%0 Journal Article
%A J.D. Lawson
%A B. Madison
%T Peripherality in semigroups.
%J Semigroup forum
%D 1970
%P 128-142
%V 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1970__1_133783/
%F SF_1970__1_133783