Daniel Stutzbach Reza Rejaie Subhabrata Sen Characterizing Unstructured Overlay Topologies in Modern P2P File-Sharing Systems. 49-62 2005 conf/imc/2005 Internet Measurment Conference http://www.usenix.org/events/imc05/tech/stutzbach.html db/conf/imc/imc2005.html#StutzbachRS05