@InProceedings{streng2008iasted,
  author = {S. Streng, D. Guinard, H. Gellersen, and A. Schmidt},
  title  = "{Using Spatial Conditions for Proactive Computing and Interaction Metaphors}",
  booktitle = {Proceedings of the 3rd IASTED International Conference on Human Computer Interaction (IASTED-HCI '08)},
  publisher = {Acta Press},
  location = {Canada},
  month = {march},
  year =   {2008}
}