title: a unified framework for enforcing multiple access control policies. authors: s jajodia , p samarati , v subrahmanian , e bertino. venue: sigmod conference. year: 1997
title: a unified framework for enforcing multiple access control policies. authors: e bertino , s jajodia , p samarati , vs subrahmanian. venue: proceedings of acm sigmod conference on management of data , & hellip ; ,. year: nan