@InProceedings {ddpstz-www2004,
    author = {E. Damiani and S. {De Capitani di Vimercati} and S. Paraboschi and P. Samarati and A. Tironi and L. Zaniboni},
    booktitle = {Poster Proceedings of the 13th World Wide Web Conference},
    title = {Spam Attacks: {P2P} to the Rescue},
    address = {New York City, USA},
    month = {May},
    year = {2004}
}