@misc{cryptoeprint:2008:466,
    author = {Maria Isabel Gonzalez Vasco and Rainer Steinwandt},
    title = {Combined (identity-based) public key schemes},
    howpublished = {Cryptology ePrint Archive, Report 2008/466},
    year = {2008},
    url = {http://eprint.iacr.org/2008/466},
}