%0 Journal Article
%A Tang,  Min
%T Relatively prime sets and a Phi function for subsets of \(\{1, 2,\dots, n\}\)
%J Journal of integer sequences
%D 2010
%V 13
%N 7
%U http://geodesic.mathdoc.fr/item/JIS_2010__13_7_a3/
%G en
%F JIS_2010__13_7_a3