@article{ref1,
title="Handling Changes in Highway Accident Data Reporting: The Case of Pennsylvania's Towaway Criterion",
journal="Transportation quarterly",
year="1985",
author="Loukissas, PJ and Schultz, LC",
volume="39",
number="1",
pages="73-92",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0278-9434",
doi="",
url="http://dx.doi.org/"
}