@article{ref1,
title="Virginia's cooperative accident analysis system",
journal="Highway Research Board bulletin",
year="1956",
author="Vick, Alfred",
volume="142",
number="",
pages="-",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0073-2206",
doi="",
url="http://dx.doi.org/"
}