Hailong Cai Jun Wang Foreseer: A Novel, Locality-Aware Peer-to-Peer System Architecture for Keyword Searches. 38-58 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3231&spage=38 2004 conf/middleware/2004 Middleware db/conf/middleware/middleware2004.html#CaiW04