%0 Journal Article %A Ya. P. Lumelskii %T Random walks related to generalized urn schemes %J Doklady Akademii Nauk %D 1973 %P 1281-1284 %V 209 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_209_6_a7/ %G ru %F DAN_1973_209_6_a7