@misc{cryptoeprint:2003:112,
    author = {Gene Tsudik and Shouhuai Xu},
    title = {Accumulating Composites and Improved Group Signing},
    howpublished = {Cryptology ePrint Archive, Report 2003/112},
    year = {2003},
    url = {http://eprint.iacr.org/2003/112},
}