Cryptology ePrint Archive: BibTeX Citation of Report 2012/488

@misc{cryptoeprint:2012:488,
    author = {Mohammad Beheshti-Atashgah \and Majid Bayat \and Mahmoud Gardeshi \and Mohammad Reza Aref},
    title = {Designated Verifier Threshold Proxy Signature Scheme without Random Oracles},
    howpublished = {Cryptology ePrint Archive, Report 2012/488},
    year = {2012},
    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.