@misc{cryptoeprint:2010:074,
    author = {Andrew C. Yao and  Moti Yung and Yunlei Zhao},
    title = {Concurrent Knowledge Extraction in the Public-Key Model},
    howpublished = {Cryptology ePrint Archive, Report 2010/074},
    year = {2010},
    url = {http://eprint.iacr.org/2010/074},
}