@misc{cryptoeprint:2007:169,
    author = {Michael Backes and Dominique Unruh},
    title = {On the Security of Protocols with Logarithmic Communication Complexity},
    howpublished = {Cryptology ePrint Archive, Report 2007/169},
    year = {2007},
    url = {http://eprint.iacr.org/2007/169},
}