@misc{cryptoeprint:2006:414,
    author = {Shien Jin Ong and Salil Vadhan},
    title = {Zero Knowledge and Soundness are Symmetric},
    howpublished = {Cryptology ePrint Archive, Report 2006/414},
    year = {2006},
    url = {http://eprint.iacr.org/2006/414},
}