Cryptology ePrint Archive: BibTeX Citation of Report 2013/487

@misc{cryptoeprint:2013:487,
    author = {Tsutomu Iijima and Fumiyuki Momose and Jinhui Chao},
    title = {Classification of Elliptic/hyperelliptic Curves with Weak Coverings against the GHS attack under an Isogeny Condition},
    howpublished = {Cryptology ePrint Archive, Report 2013/487},
    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.