@article{ref1,
title="Decline of violence: Taming the devil within us",
journal="Nature",
year="2011",
author="Pinker, Steven",
volume="478",
number="7369",
pages="309-311",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0028-0836",
doi="10.1038/478309a",
url="http://dx.doi.org/10.1038/478309a"
}