@InProceedings {dds-isspi2005,
    author = {E. Damiani and S. {De Capitani di Vimercati} and P. Samarati},
    booktitle = {Proc. of the 5th IEEE International Symposium on Signal Processing and Information},
    title = {New Paradigms for Access Control in Open Environments},
    address = {Athens, Greece},
    month = {December},
    day = {18-21},
    year = {2005}
}