@inproceedings{inproceedingsf57e69ed,
title   = {Urn scheme to obtain properties of stirling numbers of second kind},
author = {Leite, Jose Galvao and Pereira, Carlos Alberto de Bragança},
year = {1992},
publisher = {Ufrj},
booktitle   = {Simpósio Nacional de Probabilidade e Estatística}
}