Cryptology ePrint Archive: BibTeX Citation of Report 2014/607

@misc{cryptoeprint:2014:607,
    author = {Daniel Slamanig and Raphael Spreitzer and Thomas Unterluggauer},
    title = {Adding Controllable Linkability to Pairing-Based Group Signatures For Free},
    howpublished = {Cryptology ePrint Archive, Report 2014/607},
    year = {2014},
    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.