%0 Journal Article
%A S. Rankin
%A J. Johnson
%T Semigroups and lattices.
%J Semigroup forum
%D 1980
%P 385-386
%V 20
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1980__20_134429/
%F SF_1980__20_134429