Cryptology ePrint Archive: BibTeX Citation of Report 2006/403

@misc{cryptoeprint:2006:403,
    author = {Willi Geiselmann and Rainer Steinwandt},
    title = {Non-Wafer-Scale Sieving Hardware for the NFS: Another Attempt to Cope with 1024-bit},
    howpublished = {Cryptology ePrint Archive, Report 2006/403},
    year = {2006},
    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.