@misc{cryptoeprint:2003:111,
    author = {Jiqiang Lv and Jingwei Liu and Xinmei Wang},
    title = {Further Cryptanalysis of some Proxy Signature Schemes},
    howpublished = {Cryptology ePrint Archive, Report 2003/111},
    year = {2003},
    url = {http://eprint.iacr.org/2003/111},
}