@conference {543,
	title = {Efficient Search and Approximate Information Filtering in a Distributed Peer-to-Peer Environment of Digital Libraries},
	booktitle = {Proceedings of the DELOS Conference on Digital Libraries},
	year = {2007},
	month = {February},
	address = {Pisa, Italy},
	author = {Christian Zimmer and Christos Tryfonopoulos and Gerhard Weikum}
}
