Cryptology ePrint Archive: BibTeX Citation of Report 2008/259

@misc{cryptoeprint:2008:259,
    author = {ZHAO Lu, WEN Qiao-yan},
    title = {2-Adic Complexity of a Sequence Obtained from a Periodic Binary Sequence by Either Inserting or Deleting  k Symbols within One Period},
    howpublished = {Cryptology ePrint Archive, Report 2008/259},
    year = {2008},
    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.