@misc{cryptoeprint:2007:080,
    author = {Sujing Zhou,  Dongdai Lin},
    title = {Weakly only Unforgeable Signature and Its Application in Group Signature },
    howpublished = {Cryptology ePrint Archive, Report 2007/080},
    year = {2007},
    url = {http://eprint.iacr.org/2007/080},
}