@misc{cryptoeprint:2011:431,
    author = {Enrico Thomae and Christopher Wolf},
    title = {Roots of Square: Cryptanalysis of DoubleLayer Square and Square+},
    howpublished = {Cryptology ePrint Archive, Report 2011/431},
    year = {2011},
    url = {http://eprint.iacr.org/2011/431},
}