@misc{cryptoeprint:2012:442,
    author = {Benoit Libert and Thomas Peters and Moti Yung},
    title = {Group Signatures with Almost-for-free Revocation},
    howpublished = {Cryptology ePrint Archive, Report 2012/442},
    year = {2012},
    url = {http://eprint.iacr.org/2012/442},
}