@misc{cryptoeprint:2006:167,
author = {Yunho Lee and Kwangwoo Lee and Seungjoo Kim and Dongho Won},
title = {Towards Trustworthy e-Voting using Paper Receipts},
howpublished = {Cryptology ePrint Archive, Report 2006/167},
year = {2006},
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.