Mengkun Yang Zongming Fei Assigning Identifications to Nodes in Unstructured Peer-to-Peer Networks: A Novel Approach to Improving Search Efficiency. 411-415 2007 GLOBECOM http://dx.doi.org/10.1109/GLOCOM.2007.83 conf/globecom/2007 db/conf/globecom/globecom2007.html#YangF07