Shiding Lin Qiao Lian Ming Chen Zheng Zhang A Practical Distributed Mutual Exclusion Protocol in Dynamic Peer-to-Peer Systems. 11-21 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3279&spage=11 2004 conf/iptps/2004 IPTPS db/conf/iptps/iptps2004.html#LinLCZ04