@conference {549,
	title = {Information Retrieval and Filtering over Self-Organising Digital Libraries},
	booktitle = {Proceedings of the 12th European Conference on Research and Advanced Technology for Digital Libraries (ECDL)},
	year = {2008},
	month = {September},
	address = {Aarhus, Denmark},
	author = {Paraskevi Raftopoulou and E.G.M. Petrakis and Christos Tryfonopoulos and Gerhard Weikum}
}
