Nicolaas Ruberg Gabriela Ruberg Marta Mattoso Digging Database Statistics and Costs Parameters for Distributed Query Processing. 301-318 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2888&spage=301 2003 conf/coopis/2003 CoopIS/DOA/ODBASE db/conf/coopis/coopis2003.html#RubergRM03