Li Zhang Gang Pan Zhaohui Wu Shijian Li Cho-li Wang SmartShadow: Modeling A User-centric Mobile Virtual Space. 1-4 2009 PerCom http://dx.doi.org/10.1109/PERCOM.2009.4912784 conf/percom/2009 db/conf/percom/percom2009.html#ZhangPWLW09