%0 Journal Article %A L. B. Klebanov %T When has a~quadratic statistics a~constant regression on the sample mean? %J Teoriâ veroâtnostej i ee primeneniâ %D 1979 %P 646-648 %V 24 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1979_24_3_a23/ %G ru %F TVP_1979_24_3_a23