@misc{cryptoeprint:2009:380,
    author = {Carlo Blundo and Angelo De Caro and Giuseppe Persiano},
    title = {Untraceable Tags based on Mild Assumptions},
    howpublished = {Cryptology ePrint Archive, Report 2009/380},
    year = {2009},
    url = {http://eprint.iacr.org/2009/380},
}