Cryptology ePrint Archive: BibTeX Citation of Report 2013/020

@misc{cryptoeprint:2013:020,
    author = {Markus Rückert and Dominique Schroeder},
    title = {Aggregate and Verifiably Encrypted Signatures from Multilinear Maps Without Random Oracles},
    howpublished = {Cryptology ePrint Archive, Report 2013/020},
    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.