1. K. Alexander, R. Cyganiak, M. Hausenblas, J. Zhao, Describing linked datasets, in: Proceedings of the WWW International Workshop on Linked Data on the Web (LDOW 2009). Madrid, Spain, 2009.
2. Modern Information Retrieval;Baeza-Yates,1999
3. S. Bergamaschi, F. Guerra, M. Orsini, C. Sartori, M. Vincini, RELEVANT News: a semantic news feed aggregator, in: Proceedings of the 4th Workshop on Semantic Web Applications and Perspectives (SWAP 2007), Bari, Italy, 2007.
4. T. Berners-Lee, J. Hollenbach, K. Lu, J. Presbrey, E. Prud'hommeaux, M. Schraefel, Tabulator Redux: browsing and writing linked data, in: Proceedings of the WWW International Workshop on Linked Data on the Web (LDOW 2008), Beijing, China, 2008.
5. Global viewing of heterogeneous data sources;Castano;IEEE Transactions on Knowledge and Data Engineering,2001