@article{ref1,
title="Calculating relative involvement rates in accidents without determining exposure",
journal="Traffic safety research review",
year="1967",
author="Thorpe, JT",
volume="11",
number="",
pages="3-8",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0564-0741",
doi="",
url="http://dx.doi.org/"
}