@misc{cryptoeprint:2008:431,
    author = {Alptekin Kupcu and Anna Lysyanskaya},
    title = {Usable Optimistic Fair Exchange},
    howpublished = {Cryptology ePrint Archive, Report 2008/431},
    year = {2008},
    url = {http://eprint.iacr.org/2008/431},
}