Cryptology ePrint Archive: BibTeX Citation of Report 2004/206

    author       = {Jing Xu  and
		     Zhenfeng Zhang  and
		     Dengguo Feng},
    title        = {ID-Based Proxy Signature Using Bilinear Pairings},
    howpublished = {Cryptology ePrint Archive, Report 2004/206},
    year         = {2004},
    note         = {\url{}},

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.

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