%0 Journal Article %A L. B. Klebanov %T Unbiased estimators and convex loss functions %J Zapiski Nauchnykh Seminarov POMI %D 1974 %P 40-52 %V 43 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1974_43_a4/ %G ru %F ZNSL_1974_43_a4