@article{ref1,
title="Nuclear war: the threat that never went away",
journal="Nature",
year="2008",
author="Butler, D.",
volume="451",
number="7175",
pages="114-115",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0028-0836",
doi="10.1038/451114a",
url="http://dx.doi.org/10.1038/451114a"
}