%0 Journal Article
%A Hill, Paul
%T Concerning anti-closed subsets in semigroups
%J Portugaliae mathematica
%D 1967
%P 193-200
%V 26
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1967__26_2_115018/
%G en
%F PORMA_1967__26_2_115018