@InProceedings{guinard2007permid,
  author = {D. Guinard, S. Streng, H. Gellersen},
  title  = "{Extending Mobile Devices with Spatially Arranged Gateways to Pervasive Services}",
  booktitle = {Workshop on Pervasive Mobile Interaction Devices (PERMID) in conjunction with Pervasive 2007, Toronto, Canada, May 2007},
  month = may,
  year =   {2007}
  }