Cryptology ePrint Archive: BibTeX Citation of Report 2011/376

@misc{cryptoeprint:2011:376,
    author = {Julien Bringer and Alain Patey},
    title = {Backward Unlinkability for a VLR Group Signature Scheme with Efficient Revocation Check},
    howpublished = {Cryptology ePrint Archive, Report 2011/376},
    year = {2011},
    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.