OilEd : KI2001 citation

@inproceedings{oiled,
  author = {Bechhofer, Sean and Horrocks, Ian and Goble, Carole and Stevens, Robert},
  title = {{OilEd}: a Reason-able Ontology Editor for the Semantic Web},
  booktitle = {Proceedings of KI2001, Joint German/Austrian conference on Artificial Intelligence},
  address = {Vienna},
  month = {September},
  publisher = {Springer-Verlag},
  series = {Lecture Notes in Computer Science},
  number = 2174,
  year = 2001,
  pages = {396--408},
}