@misc{cryptoeprint:2007:456,
    author = {Ning Ding and Dawu Gu},
    title = {Precise Zero-Knowledge in Concurrent Setting},
    howpublished = {Cryptology ePrint Archive, Report 2007/456},
    year = {2007},
    url = {http://eprint.iacr.org/2007/456},
}