@article{ref1,
title="The Twin Trailer Controversy",
journal="Transportation quarterly",
year="1984",
author="Haake, SH",
volume="38",
number="4",
pages="521-531",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0278-9434",
doi="",
url="http://dx.doi.org/"
}