Cryptology ePrint Archive: BibTeX Citation of Report 2010/198

@misc{cryptoeprint:2010:198,
    author = {Mario Lamberger and Florian Mendel and Christian Rechberger and Vincent Rijmen and Martin Schläffer},
    title = {The Rebound Attack and Subspace Distinguishers: Application to Whirlpool},
    howpublished = {Cryptology ePrint Archive, Report 2010/198},
    year = {2010},
    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.