Luca De Santis Monica Scannapieco Tiziana Catarci Trusting Data Quality in Cooperative Information Systems. 354-369 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2888&spage=354 2003 conf/coopis/2003 CoopIS/DOA/ODBASE db/conf/coopis/coopis2003.html#SantisSC03