@misc{cryptoeprint:2010:257,
    author = {Alex Biryukov and Dmitry Khovratovich},
    title = {Feasible Attack on the 13-round AES-256},
    howpublished = {Cryptology ePrint Archive, Report 2010/257},
    year = {2010},
    url = {http://eprint.iacr.org/2010/257},
}