Cryptology ePrint Archive: BibTeX Citation of Report 2013/131

@misc{cryptoeprint:2013:131,
    author = {Thomaz Oliveira and Julio López and Diego F. Aranha and Francisco Rodríguez-Henríquez},
    title = {Two is the fastest prime: lambda coordinates for binary elliptic curves},
    howpublished = {Cryptology ePrint Archive, Report 2013/131},
    year = {2013},
    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.