@misc{cryptoeprint:2012:236,
    author = {D. Bernhard and O. Pereira and B. Warinschi},
    title = {On Necessary and Sufficient Conditions for Private Ballot Submission},
    howpublished = {Cryptology ePrint Archive, Report 2012/236},
    year = {2012},
    url = {http://eprint.iacr.org/2012/236},
}