@article{ref1,
title="Vortex aspects of the highway safety problem",
journal="Traffic safety research review",
year="1962",
author="Stonex, K. A.",
volume="6",
number="2",
pages="15-24",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0564-0741",
doi="",
url="http://dx.doi.org/"
}