@misc{cryptoeprint:2011:396,
author = {Amos Beimel and Adam Groce and Jonathan Katz and Ilan Orlov},
title = {Fair Computation with Rational Players},
howpublished = {Cryptology ePrint Archive, Report 2011/396},
year = {2011},
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.