Cryptology ePrint Archive: BibTeX Citation of Report 2009/466

@misc{cryptoeprint:2009:466,
    author = {Daniel V. Bailey, Brian Baldwin, Lejla Batina, Daniel J. Bernstein, Peter Birkner, Joppe W. Bos, Gauthier van Damme, Giacomo de Meulenaer, Junfeng Fan, Tim Güneysu, Frank Gurkaynak, Thorsten Kleinjung, Tanja Lange, Nele Mentens, Christof Paar, Francesco Regazzoni, Peter Schwabe, Leif Uhsadel},
    title = {The Certicom Challenges ECC2-X},
    howpublished = {Cryptology ePrint Archive, Report 2009/466},
    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.