Cryptology ePrint Archive: BibTeX Citation of Report 2008/076

    author       = {Kashif Ali and
		    Howard M. Heys},
    title        = {Results from a Search for the Best Linear Approximation of a Block Cipher},
    howpublished = {Cryptology ePrint Archive, Report 2008/076},
    year         = {2008},
    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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