%0 Journal Article %A A. A. Novikov %A T. L. Shervashidze %T XVIII Winter School on Probability Theory and Mathematical Statistics %J Teoriâ veroâtnostej i ee primeneniâ %D 1984 %P 617-619 %V 29 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1984_29_3_a33/ %G ru %F TVP_1984_29_3_a33