@InProceedings {csv.aica93,
    author = {S. Castano and P. Samarati and C. Villa},
    booktitle = {Atti del Congresso Annuale AICA},
    title = {Un Modello di Sicurezza per Ambienti Ipertestuali},
    address = {Lecce},
    pages = {45-60},
    month = {September},
    year = {1993}
}