Cryptology ePrint Archive: BibTeX Citation of Report 2013/639

@misc{cryptoeprint:2013:639,
    author = {Deng Tang and Claude Carlet and Xiaohu Tang},
    title = {Differentially 4-Uniform Bijections by Permuting the Inverse Function},
    howpublished = {Cryptology ePrint Archive, Report 2013/639},
    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.