%0 Journal Article %A Neumann, Konrad %A Zontek, Stefan %T On geometry of the set of admissible quadratic estimators of quadratic functions of normal parameters %J Discussiones Mathematicae. Probability and Statistics %D 2006 %P 109-125 %V 26 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMPS_2006_26_2_a0/ %G en %F DMPS_2006_26_2_a0