@inproceedings{IA, title = {Reducing {OWL} entailment to description logic satisfiability}, author = {Ian Horrocks}, booktitle = {Proc. of the 2nd International {Semantic Web} Conference (ISWC)}, url = {citeseer.ist.psu.edu/article/horrocks03reducing.html}, year = {2003}, biburl = {http://www.bibsonomy.org/bibtex/269e5e1d0a0c4cf5d4e8213f0036a7f4d/marciomr}, keywords = {DLs OWL } }