@article{ref1,
title="Do nonhuman animals commit suicide?",
journal="Behavioral and brain sciences",
year="1980",
author="Hamilton, William J.",
volume="3",
number="2",
pages="278-279",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0140-525X",
doi="10.1017/S0140525X00004830",
url="http://dx.doi.org/10.1017/S0140525X00004830"
}