%0 Journal Article %A V. N. Solov'ev %T Dual extremal problems and their applications to minimax estimation problems %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1997 %P 685-720 %V 52 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1997_52_4_a1/ %G en %F RM_1997_52_4_a1