@article{ref1,
title="Today's risks: thinking the unthinkable",
journal="Nature",
year="1977",
author="Farmer, R.",
volume="267",
number="5607",
pages="92-93",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-0836",
doi="10.1038/267092a0",
url="http://dx.doi.org/10.1038/267092a0"
}