Cryptology ePrint Archive: BibTeX Citation of Report 2009/457

@misc{cryptoeprint:2009:457,
    author = {Nozomu Nishihara and Ryuichi Harasawa and Yutaka Sueyoshi and Aichi Kudo},
    title = {A remark on the computation of cube roots in finite fields},
    howpublished = {Cryptology ePrint Archive, Report 2009/457},
    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.