Cryptology ePrint Archive: BibTeX Citation of Report 2012/137

@misc{cryptoeprint:2012:137,
    author = {Daniel J. Bernstein and  Hsieh-Chung Chen and Chen-Mou Cheng and Tanja Lange and Ruben Niederhagen and Peter Schwabe and Bo-Yin Yang},
    title = {Usable assembly language for GPUs: a success story},
    howpublished = {Cryptology ePrint Archive, Report 2012/137},
    year = {2012},
    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.