@InProceedings {ddfs-iciss2006,
    author = {E. Damiani and S. {De Capitani di Vimercati} and C. Fugazza and P. Samarati},
    booktitle = {Proc. of the 2nd International Conference on Information Systems Security (ICISS 2006)},
    title = {Extending Context Descriptions in Semantics-Aware Access Control},
    address = {Kolkata, India},
    month = {December},
    day = {17-21},
    year = {2006}
}