Cryptology ePrint Archive: BibTeX Citation of Report 2011/148

@misc{cryptoeprint:2011:148,
    author = {Hongbo Yu and Jiazhe Chen and Ketingjia and Xiaoyun Wang},
    title = {Near-Collision Attack on the Step-Reduced Compression Function of Skein-256},
    howpublished = {Cryptology ePrint Archive, Report 2011/148},
    year = {2011},
    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.