Cryptology ePrint Archive: BibTeX Citation of Report 2013/746

@misc{cryptoeprint:2013:746,
    author = {Vadim Lyubashevsky and Daniele Micciancio},
    title = {Asymptotically Efficient Lattice-Based Digital Signatures},
    howpublished = {Cryptology ePrint Archive, Report 2013/746},
    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.