Jonathan P. Benson Tony O'Donovan Padraig O'Sullivan Utz Roedig Cormac J. Sreenan John Barton Aoife Murphy Brendan O'Flynn Car-Park Management using Wireless Sensor Networks. 588-595 2006 LCN http://dx.doi.org/10.1109/LCN.2006.322020 conf/lcn/2006 db/conf/lcn/lcn2006.html#BensonOORSBMO06