@misc{cryptoeprint:2002:157,
    author = {Elad Barkan and Eli Biham},
    title = {In How Many Ways Can You Write Rijndael?},
    howpublished = {Cryptology ePrint Archive, Report 2002/157},
    year = {2002},
    url = {http://eprint.iacr.org/2002/157},
}