@misc{cryptoeprint:2008:266,
author = {Anne Broadbent and Alain Tapp},
title = {Information-Theoretically Secure Voting Without an Honest Majority},
howpublished = {Cryptology ePrint Archive, Report 2008/266},
year = {2008},
note = {\url{http://eprint.iacr.org/}},
}
You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.