@inbook{5656,
  author       = {{Schryen, Guido}},
  booktitle    = {{Vom LAN zum Kommunikationsnetz - Systeme und Applikationen}},
  editor       = {{Schulte, Heinz}},
  publisher    = {{Interest-Verlag}},
  title        = {{{Location Based Services}}},
  year         = {{2007}},
}