@misc{cryptoeprint:2011:422,
    author = {Jérémy Jean and María Naya-Plasencia and Martin Schläffer},
    title = {Improved Analysis of ECHO-256},
    howpublished = {Cryptology ePrint Archive, Report 2011/422},
    year = {2011},
    url = {http://eprint.iacr.org/2011/422},
}