%0 Journal Article %T Summary of Lectures Given at the Sessions of the Seminar on Probability Theory and Mathematical Statistics in the Mathematical Institute of the Academy of Sciences of the USSR %J Teoriâ veroâtnostej i ee primeneniâ %D 1972 %P 384-391 %V 17 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1972_17_2_a18/ %G ru %F TVP_1972_17_2_a18