@article{ref1,
title="Homicide and fertility rates in the United States",
journal="Social biology",
year="1974",
author="Lyster, W. R.",
volume="21",
number="4",
pages="389-392",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0037-766X",
doi="",
url="http://dx.doi.org/"
}