Walid M. Ibrahim Abd-Elhamid M. Taha Hossam S. Hassanein Scalability issues in localizing Things. 673-680 2011 LCN http://dx.doi.org/10.1109/LCN.2011.6115533 conf/lcn/2011 db/conf/lcn/lcn2011.html#IbrahimTH11