%0 Journal Article
%A Hee Sik Kim
%A Kyoung Ja Lee
%T Extended Upper Sets in $BE$-Algebras
%J Bulletin of the Malaysian Mathematical Society
%D 2011
%V 34
%N 3
%U http://geodesic.mathdoc.fr/item/BMMS_2011_34_3_a8/
%F BMMS_2011_34_3_a8