@misc{cryptoeprint:2013:769,
    author = {Martin Hirt and Ueli Maurer and Pavel Raykov},
    title = {Broadcast Amplification},
    howpublished = {Cryptology ePrint Archive, Report 2013/769},
    year = {2013},
    url = {https://eprint.iacr.org/2013/769},
}