%0 Journal Article
%A D.C. Jackson
%T Direct products of cyclic semigroups and unions of groups.
%J Semigroup forum
%D 1995
%P 223-232
%V 50
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1995__50_3_135380/
%F SF_1995__50_3_135380