%0 Journal Article %A M. L. Gerver %A E. A. Kudryavtseva %T Extremal properties of discrete measures, the~universal sequence, and the~duality principle %J Sbornik. Mathematics %D 1998 %P 1587-1610 %V 189 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1998_189_11_a0/ %G en %F SM_1998_189_11_a0