Cryptology ePrint Archive: BibTeX Citation of Report 2014/718

@misc{cryptoeprint:2014:718,
    author = {George Danezis and Cedric Fournet and Jens Groth and Markulf Kohlweiss},
    title = {Square Span Programs with Applications to Succinct NIZK Arguments},
    howpublished = {Cryptology ePrint Archive, Report 2014/718},
    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.