M. Nedim Alpdemir Arijit Mukherjee Norman W. Paton Paul Watson Alvaro A. A. Fernandes Anastasios Gounaris Jim Smith Service-Based Distributed Querying on the Grid. 467-482 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2910&spage=467 2003 conf/icsoc/2003 ICSOC db/conf/icsoc/icsoc2003.html#AlpdemirMPWFGS03