@misc{cryptoeprint:2012:085,
    author = {Stanislav Bulygin and Michael Walter},
    title = {Study of the invariant coset attack on PRINTcipher: more weak keys with practical key recovery},
    howpublished = {Cryptology ePrint Archive, Report 2012/085},
    year = {2012},
    url = {http://eprint.iacr.org/2012/085},
}