@misc{cryptoeprint:2006:137,
    author = {Ari Juels and Stephen A. Weis},
    title = {Defining Strong Privacy for RFID},
    howpublished = {Cryptology ePrint Archive, Report 2006/137},
    year = {2006},
    url = {http://eprint.iacr.org/2006/137},
}