@inproceedings{GrauOWLEd05,
  title = "Representing Qualitative Spatial Information in {OWL DL}",
  author = "Yarden Katz and Bernardo {Cuenca Grau}",
  year = "2005",
  booktitle = "Proceedings of the First International Workshop: OWL Experiences and Directions. Galway, Ireland, November 2005",
}