Cryptology ePrint Archive: BibTeX Citation of Report 2010/185

@misc{cryptoeprint:2010:185,
    author = {Wenping Ma, Chen Yang,  and Shaohui Sun},
    title = {New Methods to Construct Golay Complementary Sequences Over the $QAM$ Constellation },
    howpublished = {Cryptology ePrint Archive, Report 2010/185},
    year = {2010},
    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.