Ashish Gehani Gershon Kedem RheoStat: Real-Time Risk Management. 296-314 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3224&spage=296 2004 conf/raid/2004 RAID db/conf/raid/raid2004.html#GehaniK04