@misc{cryptoeprint:2004:190,
    author = {Javier Herranz and Germ\'an S\'aez},
    title = {Distributed Ring Signatures for Identity-Based Scenarios},
    howpublished = {Cryptology ePrint Archive, Report 2004/190},
    year = {2004},
    url = {http://eprint.iacr.org/2004/190},
}