Cryptology ePrint Archive: BibTeX Citation of Report 2015/522

@misc{cryptoeprint:2015:522,
    author = {Anja Becker, Nicolas Gama, Antoine Joux},
    title = {Speeding-up lattice sieving without increasing the memory, using sub-quadratic nearest neighbor search},
    howpublished = {Cryptology ePrint Archive, Report 2015/522},
    year = {2015},
    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.