@article{ref1,
title="Methods for improving analysis of roadside safety",
journal="Transportation research record",
year="1979",
author="Glennon, John C. and Sharp, Michael C.",
volume="709",
number="",
pages="20-25",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0361-1981",
doi="",
url="http://dx.doi.org/"
}