@misc{cryptoeprint:2000:032,
    author = {Birgit Pfitzmann, Ahmad-Reza Sadeghi},
    title = {Anonymous Fingerprinting with Direct Non-Repudiation},
    howpublished = {Cryptology ePrint Archive, Report 2000/032},
    year = {2000},
    url = {http://eprint.iacr.org/2000/032},
}