%0 Journal Article
%A K. Ahre
%T On the closure of the bicyclic semigroup.
%J Semigroup forum
%D 1982
%P 379-380
%V 25
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1982__25_134586/
%F SF_1982__25_134586