@misc{cryptoeprint:2004:300,
    author = {Michael Backes and Birgit Pfitzmann},
    title = {Relating Symbolic and Cryptographic Secrecy},
    howpublished = {Cryptology ePrint Archive, Report 2004/300},
    year = {2004},
    url = {http://eprint.iacr.org/2004/300},
}