@article{ref1,
title="International comparisons of road accident statistics",
journal="Accident analysis and prevention",
year="1969",
author="Bull, J. P.",
volume="1",
number="3",
pages="293-300",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0001-4575",
doi="",
url="http://dx.doi.org/"
}