Cryptology ePrint Archive: BibTeX Citation of Report 2010/628

@misc{cryptoeprint:2010:628,
    author = {Sui-Guan Teo and Kenneth Koon-Ho Wong and Leonie Simpson and Ed Dawson},
    title = {State convergence and keyspace reduction of the Mixer stream cipher},
    howpublished = {Cryptology ePrint Archive, Report 2010/628},
    year = {2010},
    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.