@inproceedings{Urruty:2008,
 	author={Urruty, Thierry and Hopfgartner, Frank and Villa, Robert and Gildea, Nicholas and Jose, Joemon M.},
 	title={A Cluster-based Simulation of Facet-based Search},
 	booktitle={JCDL'08 - Proceedings of the Joint Conference on Digital Libraries, Pittsburgh, Pennsylvania},
 	year=2008,
         month=06,
         pages=472,
         url = {http://doi.acm.org/10.1145/1378889.1379017},
	publisher = {ACM Press},
}