%0 Journal Article %A I. V. Ostrovskii %T Description of the $I_0$ class in a special semigroup of probability measures %J Doklady Akademii Nauk %D 1973 %P 788-791 %V 209 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_209_4_a8/ %G ru %F DAN_1973_209_4_a8