@misc{cryptoeprint:2012:229,
    author = {Mohammad Mahmoody and David Xiao},
    title = {Languages with Efficient Zero-Knowledge PCP's are in SZK},
    howpublished = {Cryptology ePrint Archive, Report 2012/229},
    year = {2012},
    url = {http://eprint.iacr.org/2012/229},
}