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