@misc{cryptoeprint:2009:041,
    author = {Yevgeniy Dodis and Salil Vadhan and Daniel Wichs},
    title = {Proofs of Retrievability via Hardness Amplification},
    howpublished = {Cryptology ePrint Archive, Report 2009/041},
    year = {2009},
    url = {http://eprint.iacr.org/2009/041},
}