@misc{cryptoeprint:2011:002,
author = {Gunnar Kreitz},
title = {A Zero-One Law for Secure Multi-Party Computation with Ternary Outputs (full version)},
howpublished = {Cryptology ePrint Archive, Report 2011/002},
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.