@misc{cryptoeprint:2003:104,
    author = {Fangguo Zhang and Reihaneh Safavi-Naini and Chih-Yin Lin },
    title = {New Proxy Signature, Proxy Blind Signature and Proxy Ring Signature Schemes from Bilinear Pairing},
    howpublished = {Cryptology ePrint Archive, Report 2003/104},
    year = {2003},
    url = {http://eprint.iacr.org/2003/104},
}