title: removing permissions in the flexible authorization framework acm trans . database syst .. authors: åsa hagström , duminda wijesekera , francesco parisi-presicce , sushil jajodia. venue: nan. year: 2003.0
title: removing permissions in the flexible authorization framework duminda wijesekera , sushil jajodia , francesco parisi-presicce , &#197; sa hagstr &#246; m acm transactions on database systems ( tods ) 2003. authors: nan. venue: nan. year: nan