@article{ref1,
title="Traffic behavior patterns",
journal="Yale scientific magazine",
year="1948",
author="Greenshields, B. D.",
volume="22",
number="4",
pages="7-7",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0044-0140",
doi="",
url="http://dx.doi.org/"
}