@misc{cryptoeprint:2012:495,
    author = {Alfredo De Santis and Moti Yung},
    title = {"Metaproofs" (and their Cryptographic Applications)},
    howpublished = {Cryptology ePrint Archive, Report 2012/495},
    year = {2012},
    url = {http://eprint.iacr.org/2012/495},
}