Junfeng Yu Zhitang Li Jun Hu Feng Liu Lingyun Zhou Using Simulation to Characterize Topology of Peer to Peer Botnets. 78-83 2009 ICCMS http://doi.ieeecomputersociety.org/10.1109/ICCMS.2009.61 conf/iccms/2009 db/conf/iccms/iccms2009.html#YuLHLZ09