@article{ref1,
title="The relation between injury frequency and severity and vehicle age in pre-1967 automobiles",
journal="Accident analysis and prevention",
year="1971",
author="Joksch, H. C.",
volume="3",
number="4",
pages="281-289",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0001-4575",
doi="",
url="http://dx.doi.org/"
}