Mukesh K. Mohania Inderpal Narang Policy Based Enterprise (Active) Information Integration. 1-7 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2736&spage=1 2003 conf/dexa/2003 DEXA db/conf/dexa/dexa2003.html#MohaniaN03