Cryptology ePrint Archive: BibTeX Citation of Report 2009/615

@misc{cryptoeprint:2009:615,
    author = {Craig Costello and Tanja Lange and Michael Naehrig},
    title = {Faster Pairing Computations on Curves with High-Degree Twists},
    howpublished = {Cryptology ePrint Archive, Report 2009/615},
    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.