Richard Hull Bharat Kumar Daniel F. Lieuwen Peter F. Patel-Schneider Arnaud Sahuguet Sriram Varadarajan Avinash Vyas Enabling Context-Aware and Privacy-Conscious User Data Sharing. 187-198 2004 conf/mdm/2004 Mobile Data Management http://csdl.computer.org/comp/proceedings/mdm/2004/2070/00/20700187abs.htm db/conf/mdm/mdm2004.html#HullKLPSVV04