@article{ref1,
title="Traffic patterns at a narrow bridge",
journal="Highway Research Board proceedings",
year="1947",
author="Quimby, W.s. and Sutherland, W. A.",
volume="",
number="",
pages="-",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0096-1027",
doi="",
url="http://dx.doi.org/"
}