Cryptology ePrint Archive: BibTeX Citation of Report 2009/343

@misc{cryptoeprint:2009:343,
    author = {Kenneth Koon-Ho Wong and Gregory V. Bard and Robert H. Lewis },
    title = {Partitioning Multivariate Polynomial Equations via Vertex Separators for Algebraic Cryptanalysis and Mathematical Applications},
    howpublished = {Cryptology ePrint Archive, Report 2009/343},
    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.