@article{ref1,
title="Vulnerable road users - motorcyclists",
journal="Journal of traffic medicine",
year="1990",
author="Dunbar, James A.",
volume="18",
number="3",
pages="93-94",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0345-5564",
doi="",
url="http://dx.doi.org/"
}