6. References

[1] ISO. Information Technology-Database Language SQL. Standard No. ISO/IEC 9075:1999, International Organization for Standardization (ISO), 1999. (Available from American National Standards Institute, New York, NY 10036, (212) 642-4900.).

[2] HAYES, P. RDF Model Theory. Working draft, World Wide Web Consortium. September 2001. Please, see http://www.w3.org/TR/rdf-mt/.

[3] BROEKSTRA, J; Kampman, A; van Harmelen, F. Sesame: A Generic Architecture for Storing and Querying RDF and RDF Schema. International Semantic Web Conference, Sardinia, Italy, 2002.

[4] TER HORST, H J. Combining RDF and Part of OWL with Rules: Semantics, Decidability, Complexity. In Proc. of ISWC 2005, Galway, Ireland, Nov. 6-10, 2005. LNCS 3729, pp. 668-684.

[5] MOTIK, B.; GRAU, B., C.; HORROCKS, I; WU, Z.; FOKOUE, A.; LUTZ, K. Owl 2 Web Ontology Language, 2009. Please, see http://www.w3.org/TR/owl2-overview/.

[6] CARROLL, J. J; DE ROO, J. OWL Web Ontology Language: Test Cases. W3C Recommendation 10 Feb. 2004. Please, see http://www.w3.org/TR/owl-test/.