D. Beckett, Redland notes -contexts, 2003.

T. Berners-lee, R. Fielding, and L. Masinter, Uniform resource identifiers (uri): Generic syntax, 2005.
DOI : 10.17487/rfc2396

J. J. Carroll, C. Bizer, P. Hayes, and P. Stickler, Named graphs, provenance and trust, Proceedings of the 14th international conference on World Wide Web , WWW '05, pp.613-622, 2005.
DOI : 10.1145/1060745.1060835

URL : http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.105.5829&rep=rep1&type=pdf

A. Scott, B. A. Golder, and . Huberman, Usage patterns of collaborative tagging systems, J. Inf. Sci, vol.32, issue.2, pp.198-208, 2006.

R. M. Guha and R. Fikes, Contexts for the Semantic Web, Int. Sem Web Conf, ISWC, 2004.
DOI : 10.1007/978-3-540-30475-3_4

H. Halpin and V. Presutti, An Ontology of Resources: Solving the Identity Crisis, pp.521-534, 2009.
DOI : 10.1007/978-3-642-02121-3_39

. Intellidimension, Rdf gateway - database fundamentals, 2003.

R. Macgregor and I. Ko, Representing contextualized data using semantic web tools, Practical and Scalable Semantic Systems, 2003.

A. Monnin, Tags and folksonomies as artifacts of meaning. Philosophy of Engineering and Artifact in the Digital Age. A First Eastern European (Romanian) Perspective, 2009.
URL : https://hal.archives-ouvertes.fr/hal-00636123

A. Passant and P. Laublet, Meaning of a tag: A collaborative approach to bridge the gap between tagging and linked data, WWW Workshop on Linked Data on the Web (LDOW), 2008.

S. Sen, S. K. Lam, A. M. Rashid, D. Cosley, D. Frankowski et al., tagging, communities, vocabulary, evolution, Proceedings of the 2006 20th anniversary conference on Computer supported cooperative work , CSCW '06, pp.181-190, 2006.
DOI : 10.1145/1180875.1180904

M. Sintek and S. Decker, TRIPLE???A Query, Inference, and Transformation Language for the Semantic Web, Intl. Sem. Web Conf., ISWC, 2002.
DOI : 10.1007/3-540-48005-6_28