@misc{cryptoeprint:2007:469,
    author = {Xun Yi and Raylin Tso and Eiji Okamoto},
    title = {Group Password-Authenticated Key Exchange from Identity-Based Cryptosystem},
    howpublished = {Cryptology ePrint Archive, Report 2007/469},
    year = {2007},
    url = {http://eprint.iacr.org/2007/469},
}