Cryptology ePrint Archive: BibTeX Citation of Report 2008/490

@misc{cryptoeprint:2008:490,
    author = {Michael Scott and Naomi Benger and Manuel Charlemagne and Luis J. Dominguez Perez and Ezekiel J. Kachisa},
    title = {On the final exponentiation for calculating pairings on ordinary elliptic curves},
    howpublished = {Cryptology ePrint Archive, Report 2008/490},
    year = {2008},
    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.