@misc{cryptoeprint:2008:505,
    author = {Tibor Jager and Andy Rupp},
    title = {Lower Bounds on Black-Box Ring Extraction},
    howpublished = {Cryptology ePrint Archive, Report 2008/505},
    year = {2008},
    url = {http://eprint.iacr.org/2008/505},
}