@misc{cryptoeprint:2012:462,
    author = {Yang Wang and Man Ho Au and Willy Susilo},
    title = {Perfect Ambiguous Optimistic Fair Exchange},
    howpublished = {Cryptology ePrint Archive, Report 2012/462},
    year = {2012},
    url = {http://eprint.iacr.org/2012/462},
}