1. Mnola, F., Miller, E., McBride, B.: RDF Primer. W3C Recommendation 10(1–107), 6 (2004)
2. Sequeda, J.F., Miranker, D.P.: Ultrawrap: SPARQL Execution on Relational Data. 13
3. Aasman, J.: Allegro Graph: RDF Triple Database
4. Harris, S., Lamb, N., Shadbolt, N.: 4store: the design and implementation of a clustered RDF store. In: CEUR Workshop Proceedings, vol. 517, pp. 94–109 (2009)
5. Virtuoso Erling, O., Mikhailov, I.: RDF Support in the Virtuoso DBMS, pp. 7–24. Springer, Heidelberg (2009)