Cryptology ePrint Archive: BibTeX Citation of Report 2009/433

@misc{cryptoeprint:2009:433,
    author = {Arpita Patra and C. Pandu Rangan},
    title = {Communication Optimal Multi-Valued Asynchronous Byzantine Agreement  with Optimal Resilience},
    howpublished = {Cryptology ePrint Archive, Report 2009/433},
    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.