Werner Kurschl Wolfgang Gottesheim Stefan Mitsch Rene Prokop Johannes Schönböck Wolfgang Beer A Two-Layered Deployment Scheme for Wireless Sensor Network based Location Tracking. 726-730 2008 ITNG http://doi.ieeecomputersociety.org/10.1109/ITNG.2008.164 conf/itng/2008 db/conf/itng/itng2008.html#KurschlGMPSB08