@misc{cryptoeprint:2011:699,
    author = {Peng Xu and Hai Jin and Wei Wang and Deqing Zou},
    title = {Public-Key Encryption with Cluster-Chain-based Keyword Search},
    howpublished = {Cryptology ePrint Archive, Report 2011/699},
    year = {2011},
    url = {http://eprint.iacr.org/2011/699},
}