@misc{cryptoeprint:2014:1027,
author = {Vadim Lyubashevsky and Daniel Wichs},
title = {Simple Lattice Trapdoor Sampling from a Broad Class of Distributions},
howpublished = {Cryptology ePrint Archive, Report 2014/1027},
year = {2014},
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.