@misc{cryptoeprint:2003:071,
    author = {Markus Jakobsson and John Linn and Joy Algesheimer},
    title = {How to Protect Against a Militant Spammer},
    howpublished = {Cryptology ePrint Archive, Report 2003/071},
    year = {2003},
    url = {http://eprint.iacr.org/2003/071},
}