Cryptology ePrint Archive: BibTeX Citation of Report 2006/428

@misc{cryptoeprint:2006:428,
    author = {Lilya Budaghyan and Claude Carlet and Gregor Leander},
    title = {Another class of quadratic APN binomials over $\F_{2^n}$: the case $n$ divisible by 4},
    howpublished = {Cryptology ePrint Archive, Report 2006/428},
    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.