Cryptology ePrint Archive: BibTeX Citation of Report 2007/289

@misc{cryptoeprint:2007:289,
    author = {Michael Backes and Matteo Maffei and Dominique Unruh},
    title = {Zero-Knowledge in the Applied Pi-calculus and Automated Verification of the Direct Anonymous Attestation Protocol},
    howpublished = {Cryptology ePrint Archive, Report 2007/289},
    year = {2007},
    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.