title: flexible support for multiple access control policies acm trans . database syst .. authors: v. s. subrahmanian , sushil jajodia , pierangela samarati , maria luisa sapino. venue: nan. year: 2001.0
title: flexible support for multiple access control policies 2001. authors: sushil jajodia , pierangela samarati , maria luisa sapino , v. s. subrahmanian. venue: acm transactions on database systems ( tods ). year: nan