Cryptology ePrint Archive: BibTeX Citation of Report 2009/078

@misc{cryptoeprint:2009:078,
    author = {Stefan Lucks and Andreas Schuler and Erik Tews and Ralf-Philipp Weinmann and Matthias Wenzel},
    title = {Attacks on the DECT authentication mechanisms},
    howpublished = {Cryptology ePrint Archive, Report 2009/078},
    year = {2009},
    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.