OWL-QL - a language for deductive query answering on the Semantic Web

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\begin{bibtex} @article{DBLP:journals/ws/FikesHH04, title={OWL-QL - a language for deductive query answering on the Semantic Web}, pages={19-29}, year={2004}, volume={2}, journal={J. Web Sem.}, number={1}, ee={http://dx.doi.org/10.1016/j.websem.2004.07.002}, url={http://www.informatik.uni-trier.de/~ley/db/journals/ws/ws2.html#FikesHH04}, author={Richard Fikes and Patrick J. Hayes and Ian Horrocks} }\end{bibtex}