%0 Journal Article %A V. I. Rotar' %T On the distribution of a~quadratic form of many random variables %J Teoriâ veroâtnostej i ee primeneniâ %D 1975 %P 900-902 %V 20 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1975_20_4_a20/ %G ru %F TVP_1975_20_4_a20