Cryptology ePrint Archive: BibTeX Citation of Report 2009/518

@misc{cryptoeprint:2009:518,
    author = {Qiong Huang and Guomin Yang and Duncan S. Wong and Willy Susilo},
    title = {Efficient Strong Designated Verifier Signature Schemes without Random Oracles or Delegatability},
    howpublished = {Cryptology ePrint Archive, Report 2009/518},
    year = {2009},
    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.