@article{ref1,
title="Freeway traffic analysis and safety study",
journal="Traffic safety research review",
year="1962",
author="Mullins, BFK and Keese, CJ",
volume="6",
number="4",
pages="6-12",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0564-0741",
doi="",
url="http://dx.doi.org/"
}