@InProceedings{hilliges2006iui,
  author = {Otmar Hilliges, Christian Sandor, Gudrun Klinker},
  title  = "{Interaction Management for Ubiquitous Augmented Reality User Interfaces}",
  booktitle = {Proceedings of the International Symposium on Intelligent User Interfaces (IUI)},
  month = feb,
  year =   {2006}
  }