Cryptology ePrint Archive: BibTeX Citation of Report 2007/040

@misc{cryptoeprint:2007:040,
    author = {Pradeep Kumar Mishra and Vassil Dimitrov},
    title = {Efficient Quintuple Formulas for Elliptic Curves and Efficient Scalar Multiplication Using Multibase Number Representation},
    howpublished = {Cryptology ePrint Archive, Report 2007/040},
    year = {2007},
    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.