@misc{cryptoeprint:2013:221,
    author = {Yang Zhang, Jun-liang Chen},
    title = {Identity-based Aggregate Signatures with Verifiable Single Ones},
    howpublished = {Cryptology ePrint Archive, Report 2013/221},
    year = {2013},
    url = {http://eprint.iacr.org/2013/221},
}