@article{ref1,
title="The driver's exposure to risk of accident",
journal="Scandinavian journal of social medicine",
year="1974",
author="Bygren, L. O.",
volume="2",
number="2",
pages="49-65",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0300-8037",
doi="",
url="http://dx.doi.org/"
}