@misc{cryptoeprint:2006:158,
    author = {Chunxiang Gu and Yuefei Zhu},
    title = {An Efficient ID-based Proxy Signature Scheme from Pairings},
    howpublished = {Cryptology ePrint Archive, Report 2006/158},
    year = {2006},
    url = {http://eprint.iacr.org/2006/158},
}