@misc{cryptoeprint:2010:192,
    author = {Yi-Jun He, L.C.K. Hui, and S.M. Yiu},
    title = {Non-Transferable Proxy Re-Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2010/192},
    year = {2010},
    url = {http://eprint.iacr.org/2010/192},
}