@article{ref1,
title="Protective helmets and cranio-cerebral trauma in motorcycle accidents: a preliminary study",
journal="Proceedings of the International Research Council on the Biomechanics of Injury conference",
year="1990",
author="Doyle, David and Duffy, Esther M.",
volume="18",
number="",
pages="121-140",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="2235-3151",
doi="",
url="http://dx.doi.org/"
}