@Article {dfpps-jcs2017,
    author = {S. {De Capitani di Vimercati} and S.Foresti and S. Paraboschi and G. Pelosi and P. Samarati},
    title = {Enforcing Authorizations while Protecting Access Confidentiality},
    journal = {Journal of Computer Security (JCS)},
    year = {2017},
    note = {to appear}
}