Mahat Khelfallah Belaid Benhamou Two Revision Methods Based on Constraints: Application to a Flooding Problem. 265-270 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3249&spage=265 2004 conf/aisc/2004 AISC db/conf/aisc/aisc2004.html#KhelfallahB04