title: supporting periodic authorizations and temporal reasoning in database access control e bertino , c bettini , e ferrari , p samarati. authors: nan. venue: vldb. year: 1996.0
title: supporting periodic authorizations and temporal reasoning in database access control e bertino , c bettini , e ferrari , p samarati proceedings of the international conference on very large & hellip ; , 1996.0. authors: nan. venue: nan. year: nan