@misc{cryptoeprint:2004:327,
    author = {Sherman S.M. Chow and S.M. Yiu and Lucas C.K. Hui},
    title = {Efficient Identity Based Ring Signature},
    howpublished = {Cryptology ePrint Archive, Report 2004/327},
    year = {2004},
    url = {http://eprint.iacr.org/2004/327},
}