@inproceedings{PeMH08b, title = "Rewriting Conjunctive Queries over Description Logic Constraints", author = "H\'{e}ctor P\'{e}rez-Urbina and Boris Motik and Ian Horrocks", year = "2008", booktitle = "Proc.\ of the Int.\ Workshop on Logics in Databases (LID 2008)", url = "download/2008/PeMH08b.pdf", }