%0 Journal Article %A La Haye, Ross %T Binary relations on the power set of an $n$-element set %J Journal of integer sequences %D 2009 %V 12 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JIS_2009__12_2_a3/ %G en %F JIS_2009__12_2_a3