@article{ref1,
title="How effective are daytime motorcycle headlight use laws?",
journal="American journal of public health",
year="1983",
author="Zador, Paul L.",
volume="73",
number="7",
pages="808-810",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}