%0 Journal Article %A V. P. Demichev %T An optimal estimate for the covariance of indicator functions of associated random variables %J Teoriâ veroâtnostej i ee primeneniâ %D 2013 %P 804-812 %V 58 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_2013_58_4_a10/ %G ru %F TVP_2013_58_4_a10