@misc{cryptoeprint:2013:408,
    author = {Michael Backes and Sebastian Meiser and Dominique Schröder},
    title = {Delegatable Functional Signatures},
    howpublished = {Cryptology ePrint Archive, Report 2013/408},
    year = {2013},
    url = {https://eprint.iacr.org/2013/408},
}