Cryptology ePrint Archive: BibTeX Citation of Report 2009/120

@misc{cryptoeprint:2009:120,
    author = {Danilo Gligoroski and Rune Steinsmo \O deg\aa rd},
    title = {On the Complexity of Khovratovich et.al's Preimage Attack on Edon-R},
    howpublished = {Cryptology ePrint Archive, Report 2009/120},
    year = {2009},
    note = {\url{http://eprint.iacr.org/}},
}

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