@InCollection {dfps07,
    author = {S. {De Capitani di Vimercati} and S. Foresti and S. Paraboschi and P. Samarati},
    editor = {M. Gertz and S. Jajodia},
    booktitle = {Handbook of Database Security: Applications and Trends},
    title = {Access Control Models for XML},
    publisher = {Springer-Verlag},
    year = {2008}
}