@misc{cryptoeprint:2005:308,
    author = {Chunbo Ma, Jun Ao, and Dake He},
    title = {Adaptable Group-Oriented Signature},
    howpublished = {Cryptology ePrint Archive, Report 2005/308},
    year = {2005},
    url = {http://eprint.iacr.org/2005/308},
}