@inproceedings{KoGH11b,
  title = "Query Answering over SROIQ Knowledge Bases with SPARQL",
  author = "Ilianna Kollia and Birte Glimm and Ian Horrocks",
  year = "2011",
  booktitle = "Proceedings of the 2011 International Workshop on Description Logic (DL 2011)",
  note = "To Appear",
}