1. Linked data: evolving the web into a global data space;Heath,2011
2. K. Alexander, R. Cyganiak, M. Hausenblas, J. Zhao, Describing linked datasets with the void vocabulary, http://www.w3.org/TR/void/ (last visited 30.08.2011).
3. G.T. Williams, Sparql 1.1 service description, W3c working draft, World Wide Web Consortium, Jan 2012.
4. C. Bizer, A. Jentzsch, R. Cyganiak, State of the lod cloud, http://www4.wiwiss.fu-berlin.de/lodcloud/state/ (last visited 30.12.2011).
5. R. Isele, A. Harth, J. Umbrich, C. Bizer, LDspider: an open-source crawling framework for the Web of Linked Data, in: Poster, International Semantic Web Conference 2010, Shanghai, China, 2010.