?url_ver=Z39.88-2004&rft_id=10.1007%2F978-3-642-28166-2_7&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Massimiliano&rft.aulast=Masi&rft.au=Masi%2C+Massimiliano&rft.date=2012&rft.isbn=978-3-642-28165-5&rft.title=Formalisation+and+Implementation+of+the+XACML+Access+Control+Mechanism&rft.btitle=Engineering+Secure+Software+and+Systems&rft.genre=bookitem