Cryptology ePrint Archive: BibTeX Citation of Report 2012/335

@misc{cryptoeprint:2012:335,
    author = {Yu Lou and Huiting Han and Chunming Tang and Maozhi Xu},
    title = {Constructing Vectorial Boolean Functions with High Algebraic Immunity Based on Group Decomposition},
    howpublished = {Cryptology ePrint Archive, Report 2012/335},
    year = {2012},
    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.