Georg Wittenburg Kirsten Terfloth Freddy López Villafuerte Tomasz Naumowicz Hartmut Ritter Jochen H. Schiller Fence Monitoring - Experimental Evaluation of a Use Case for Wireless Sensor Networks. 163-178 2007 conf/ewsn/2007 EWSN http://dx.doi.org/10.1007/978-3-540-69830-2_11 db/conf/ewsn/ewsn2007.html#WittenburgTVNRS07