%0 Journal Article
%A W.A.F. Ruppert
%T On open subsemigroups of connected groups.
%J Semigroup forum
%D 1989
%P 347-362
%V 39
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1989__39_2_134996/
%F SF_1989__39_2_134996