@inproceedings{ECDL-2002-BollenVX,
	author        = "Johan Bollen and Somasekhar Vemulapalli and Weining Xu",
	booktitle     = "{Proceedings of the Sixth European Conference on Research and Advanced Technology for Digital Libraries}",
	doi           = "10.1007/3-540-45747-X_32",
	isbn          = "3-540-44178-6",
	pages         = "432--447",
	publisher     = "{Springer}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Digital Library Evaluation by Analysis of User Retrieval Patterns}",
	volume        = 2458,
	year          = 2002,
}