%0 Journal Article
%A David Lubell
%T On a density problem of Erdös
%J Acta Arithmetica
%D 1971
%P 307-309
%V 19
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/aa-19-3-307-309/
%R 10.4064/aa-19-3-307-309
%G de
%F 10_4064_aa_19_3_307_309