Cryptology ePrint Archive: BibTeX Citation of Report 2012/075

@misc{cryptoeprint:2012:075,
    author = {Wei Gao and Guilin Wang and Kefei Chen and  Xueli Wang and Guoyan Zhang},
    title = {Efficient identity-based threshold decryption  scheme from bilinear pairings},
    howpublished = {Cryptology ePrint Archive, Report 2012/075},
    year = {2012},
    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.