Bo Xing Karim Seada Nalini Venkatasubramanian Proximiter: Enabling Mobile Proximity-Based Content Sharing on Portable Devices. 1-3 2009 PerCom http://dx.doi.org/10.1109/PERCOM.2009.4912802 conf/percom/2009 db/conf/percom/percom2009.html#XingSV09