@misc{cryptoeprint:2011:497,
author = {Antoine Amarilli and David Naccache and Pablo Rauzy and Emil Simion},
title = {Can a Program Reverse-Engineer Itself?},
howpublished = {Cryptology ePrint Archive, Report 2011/497},
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.