@InProceedings{hilliges2009uist,
  author = {Hilliges, O. and Wilson, A. and Izadi, S. and Hodges, S. and Butz, A.},
  title  = "{Interactions in the Air: Adding Further Adding Further Depth to Interactive Tabletops}",
  booktitle = {In Proceedings of the 22nd ACM Symposium on User Interface Software and Technologies (ACM UIST), Victoria, Canada},
  month = oct,
  year =   {2009}
  }