Cryptology ePrint Archive: BibTeX Citation of Report 2010/037

@misc{cryptoeprint:2010:037,
    author = {Pierre-Alain Fouque and Mehdi Tibouchi},
    title = {Estimating the Size of the Image of Deterministic Hash Functions to Elliptic Curves},
    howpublished = {Cryptology ePrint Archive, Report 2010/037},
    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.