%0 Journal Article
%A G. I. Ivchenko
%T How many samples does it take to see all the balls in an urn?
%J Matematičeskie zametki
%D 1998
%P 58-63
%V 64
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1998_64_1_a6/
%G ru
%F MZM_1998_64_1_a6