@InProceedings {bjs.oak96,
    author = {E. Bertino and S. Jajodia and P. Samarati},
    booktitle = {Proc. of the 1996 IEEE Symposium on Security and Privacy},
    title = {Supporting Multiple Access Control Policies in Database Systems},
    address = {Oakland, CA},
    pages = {94-107},
    month = {May},
    year = {1996}
}