%0 Journal Article %A Nathan B. Shank %A Hannah Yang %T Coupon collector problem for non-uniform coupons and random quotas %J The electronic journal of combinatorics %D 2013 %V 20 %N 2 %U http://geodesic.mathdoc.fr/articles/10.37236/3348/ %R 10.37236/3348 %F 10_37236_3348