@article{ref1,
title="Behavioural evolution: cooperate with thy neighbour?",
journal="Nature",
year="2004",
author="Taylor, Peter D. and Day, Troy",
volume="428",
number="6983",
pages="611-612",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-0836",
doi="10.1038/428611a",
url="http://dx.doi.org/10.1038/428611a"
}