@article{ref1,
title="Traffic performance at urban intersections",
journal="Traffic quarterly",
year="1947",
author="Ericksen, E.l.",
volume="1",
number="3",
pages="254-267",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0041-0713",
doi="",
url="http://dx.doi.org/"
}