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@article{Deshpandea07, title = {An Urn Problem with Labeled and Unlabeled Balls: 11181}, author = {M. N. Deshpande and et al.}, year = {2007}, url = {http://www.jstor.org/stable/27642288}, researchr = {https://researchr.org/publication/Deshpandea07}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {114}, number = {7}, pages = {642}, }