@InCollection {bjs.acoo93,
    author = {E. Bertino and S. Jajodia and P. Samarati},
    editor = {N. Adam and B. Bhargava},
    booktitle = {Advanced Database Concepts and Research Issues},
    title = {Access Controls in Object-Oriented Database Systems: Some Approaches and Issues},
    publisher = {Springer-Verlag},
    series = {LNCS 759},
    pages = {17-44},
    year = {1993}
}