%0 Journal Article %A D. Shagdar %T On an unbiased estimate with the minimal variance in the class of linear estimates %J Teoriâ veroâtnostej i ee primeneniâ %D 1970 %P 136-138 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1970_15_1_a13/ %G ru %F TVP_1970_15_1_a13