@inproceedings{DBLP:conf/kr/CalvaneseGLLR06,
  author    = {Diego Calvanese and
               Giuseppe De Giacomo and
               Domenico Lembo and
               Maurizio Lenzerini and
               Riccardo Rosati},
  title     = {Data Complexity of Query Answering in Description Logics},
  booktitle = {KR},
  year      = {2006},
  pages     = {260-270},
  ee        = {http://www.aaai.org/Library/KR/2006/kr06-028.php},
  crossref  = {DBLP:conf/kr/2006},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/kr/2006,
  editor    = {Patrick Doherty and
               John Mylopoulos and
               Christopher A. Welty},
  title     = {Proceedings, Tenth International Conference on Principles
               of Knowledge Representation and Reasoning, Lake District
               of the United Kingdom, June 2-5, 2006},
  booktitle = {KR},
  publisher = {AAAI Press},
  year      = {2006},
  isbn      = {978-1-57735-271-6},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}