@inproceedings{CIKM-2001-WyssG,
	author        = "Catharine M. Wyss and Dirk Van Gucht",
	booktitle     = "{Proceedings of the 10th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/502585.502597",
	isbn          = "1-58113-436-3",
	pages         = "65--72",
	publisher     = "{ACM}",
	title         = "{A Relational Algebra for Data/Metadata Integration in a Federated Database System}",
	year          = 2001,
}