Cryptology ePrint Archive: BibTeX Citation of Report 2010/307

    author       = {Ruilin Li and
		    Bing Sun and
		    Chao Li},
    title        = {Impossible Differential Cryptanalysis of SPN Ciphers},
    howpublished = {Cryptology ePrint Archive, Report 2010/307},
    year         = {2010},
    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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