Cryptology ePrint Archive: BibTeX Citation of Report 2013/388

@misc{cryptoeprint:2013:388,
    author = {Tsukasa Ishiguro and Shinsaku Kiyomoto and Yutaka Miyake and Tsuyoshi Takagi},
    title = {Parallel Gauss Sieve Algorithm : Solving the SVP in the Ideal Lattice of 128-dimensions},
    howpublished = {Cryptology ePrint Archive, Report 2013/388},
    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.