@article{GHLS08a,
  author = "Glimm, Birte and Horrocks, Ian and Lutz, Carsten and Sattler, Uli",
  journal = "Journal of Artificial Intelligence Research",
  pages = "151--198",
  title = "Conjunctive Query Answering for the Description Logic $\mathcal{SHIQ}$",
  volume = "31",
  year = "2008",
}