@article{ref1,
title="Size, not mass, of car affects severity of injury in accidents",
journal="American journal of public health",
year="1993",
author="Robertson, Leon S.",
volume="83",
number="5",
pages="769-770",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}