Cryptology ePrint Archive: BibTeX Citation of Report 2013/722

@misc{cryptoeprint:2013:722,
    author = {Diego F. Aranha and Paulo S. L. M. Barreto and Patrick Longa and Jefferson E. Ricardini},
    title = {The Realm of the Pairings},
    howpublished = {Cryptology ePrint Archive, Report 2013/722},
    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.