Denis Gopan Frank DiMaio Nurit Dor Thomas W. Reps Shmuel Sagiv Numeric Domains with Summarized Dimensions. 512-529 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2988&spage=512 2004 conf/tacas/2004 TACAS db/conf/tacas/tacas2004.html#GopanDDRS04