Cryptology ePrint Archive: BibTeX Citation of Report 2014/640

@misc{cryptoeprint:2014:640,
    author = {James Alderman and Christian Janson and Carlos Cid and Jason Crampton},
    title = {Revocation in Publicly Verifiable Outsourced Computation},
    howpublished = {Cryptology ePrint Archive, Report 2014/640},
    year = {2014},
    note = {\url{http://eprint.iacr.org/}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.