@InCollection {dfs.aacsptmdm2007,
    author = {S. {De Capitani di Vimercati} and S. Foresti and P. Samarati},
    editor = {M. Petkovic and W. Jonker},
    booktitle = {Security, Privacy and Trust in Modern Data Management},
    title = {Authorization and Access Control},
    publisher = {Springer-Verlag},
    year = {2007}
}