%0 Journal Article %A T. L. Shervashidze %T XVIII Winter School on Probability Theory and Mathematical Statistics %J Teoriâ veroâtnostej i ee primeneniâ %D 1983 %P 620-622 %V 28 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1983_28_3_a21/ %G ru %F TVP_1983_28_3_a21