Sergio Greco Cristina Sirangelo Irina Trubitsyna Ester Zumpano Feasibility Conditions and Preference Criteria in Querying and Repairing Inconsistent Databases. 44-55 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3180&spage=44 2004 conf/dexa/2004 DEXA db/conf/dexa/dexa2004.html#GrecoSTZ04