@Article {saj.dke96,
    author = {P. Samarati and P. Ammann and S. Jajodia},
    title = {Maintaining Replicated Authorizations in Distributed Database Systems},
    journal = {Data & Knowledge Engineering (DKE)},
    volume = {18},
    number = {1},
    pages = {55-84},
    month = {February},
    year = {1996}
}