%0 Journal Article %A Biao Zhang %T Estimating a Distribution Function in the Presence of Auxiliary Information. %J Metrika %D 1997 %P 221-244 %V 46 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MET_1997__46_1_186258/ %F MET_1997__46_1_186258