@inproceedings{import-query-DL,
  title = "Importing Ontologies with Hidden Content",
  author = "Bernardo Cuenca Grau and Boris Motik",
  year = "2009",
  booktitle = "Proceedings of the 22nd International Workshop on Description Logics (DL 2009)",
  url = "http://web.comlab.ox.ac.uk/DL2009/proceedings/oral/Grau_Motik.pdf",
}