@article{ref1,
title="Impact of data quality on the evaluation of safety effects",
journal="Transportation and traffic theory",
year="1999",
author="Quaye, Kwei",
volume="14",
number="",
pages="71-82",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="",
doi="",
url="http://dx.doi.org/"
}