David R. Karger Matthias Ruhl Simple Efficient Load Balancing Algorithms for Peer-to-Peer Systems. 131-140 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3279&spage=131 2004 conf/iptps/2004 IPTPS db/conf/iptps/iptps2004.html#KargerR04