@misc{cryptoeprint:1997:012,
    author = {Oded Goldreich, Birgit Pfitzmann, and Ronald L. Rivest},
    title = {Self-Delegation with Controlled Propagation - or - What If You Lose Your Laptop.},
    howpublished = {Cryptology ePrint Archive, Report 1997/012},
    year = {1997},
    url = {http://eprint.iacr.org/1997/012},
}