@misc{cryptoeprint:2011:264,
    author = {Dominique Schröder and Dominique Unruh},
    title = {Round Optimal Blind Signatures},
    howpublished = {Cryptology ePrint Archive, Report 2011/264},
    year = {2011},
    url = {http://eprint.iacr.org/2011/264},
}