Cryptology ePrint Archive: BibTeX Citation of Report 2006/313

@misc{cryptoeprint:2006:313,
    author = {Lars Elmegaard-Fessel},
    title = {Efficient Scalar Multiplication and Security against Power Analysis in Cryptosystems based on the NIST Elliptic Curves Over Prime Fields},
    howpublished = {Cryptology ePrint Archive, Report 2006/313},
    year = {2006},
    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.