Yahya E. Osais Marc St-Hilaire Fei Richard Yu Directional Sensor Placement with Optimal Sensing Range, Field of View and Orientation. 19-24 2008 WiMob http://dx.doi.org/10.1109/WiMob.2008.88 conf/wimob/2008 db/conf/wimob/wimob2008.html#OsaisSY08