@inproceedings{GlRu09b,
  title = "Conjunctive Query Entailment: Decidable in Spite of O, I, and Q",
  author = "Birte Glimm and Sebastian Rudolph",
  year = "2009",
  booktitle = "Proceedings of the of the 2000 Description Logic Workshop (DL-09)",
  publisher = "CEUR Workshop Proceedings",
}