%0 Journal Article
%A R. Korkmaz
%T On the closure of B2  ( ...,...).
%J Semigroup forum
%D 1997
%P 166-174
%V 54
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1997__54_2_135517/
%F SF_1997__54_2_135517