@Misc {ds.mac2011,
    author = {S. {De Capitani di Vimercati} and P. Samarati},
    editor = {{H.C.A.} {van Tilborg} and S. Jajodia},
    booktitle = {Encyclopedia on Cryptography and Security},
    title = {Mandatory Access Control Policies (MAC)},
    publisher = {Springer},
    year = {2011}
}