@Article {dfjs.ijcse2007,
    author = {S. {De Capitani di Vimercati} and S. Foresti and S. Jajodia and P. Samarati},
    title = {Access Control Policies and Languages},
    journal = {International Journal of Computational Science and Engineering (IJCSE)},
    volume = {3},
    number = {2},
    pages = {94--102},
    year = {2007}
}