@misc{cryptoeprint:2008:147,
    author = {Timo Gendrullis and Martin Novotny and Andy Rupp},
    title = {A Real-World Attack Breaking A5/1 within Hours},
    howpublished = {Cryptology ePrint Archive, Report 2008/147},
    year = {2008},
    url = {http://eprint.iacr.org/2008/147},
}