Cryptology ePrint Archive: BibTeX Citation of Report 2004/240

    author       = {Seigo Arita and
		     Kazuto Matsuo and
		    Koh-ichi Nagao and
		    Mahoro Shimura},
    title        = {A Weil Descent Attack against Elliptic Curve Cryptosystems over Quartic Extension Fields},
    howpublished = {Cryptology ePrint Archive, Report 2004/240},
    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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