%0 Journal Article
%A K. Keimel
%T Congruence relations on cone semigroups.
%J Semigroup forum
%D 1971
%P 130-147
%V 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1971__3_133855/
%F SF_1971__3_133855