@InProceedings{hilliges2007tabletop,
  author = {Hilliges, O. and Baur, D. and Butz, A.},
  title  = "{Photohelix: Browsing, Sorting and Sharing Digital Photo Collections}",
  booktitle = {To appear in Proceedings of the 2nd IEEE Tabletop Workshop, Newport, RI, USA},
  month = oct,
  year =   {2007}
  }