@article{ref1,
title="Guidelines for Establishing Freeway Service Patrols",
journal="ITE journal",
year="1996",
author="No Author(s) Listed, ",
volume="66",
number="2",
pages="31-",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0162-8178",
doi="",
url="http://dx.doi.org/"
}