Cryptology ePrint Archive: BibTeX Citation of Report 2013/705

@misc{cryptoeprint:2013:705,
    author = {Clemens Heuberger and Michela Mazzoli},
    title = {Symmetric Digit Sets for Elliptic Curve Scalar Multiplication without Precomputation},
    howpublished = {Cryptology ePrint Archive, Report 2013/705},
    year = {2013},
    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.