Cryptology ePrint Archive: BibTeX Citation of Report 2012/140

@misc{cryptoeprint:2012:140,
    author = {Selcuk Baktir and Erkay Savas},
    title = {Highly-Parallel Montgomery Multiplication for Multi-core General-Purpose Microprocessors},
    howpublished = {Cryptology ePrint Archive, Report 2012/140},
    year = {2012},
    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.