@article{ref1,
title="Detachment of crash helmets during motorcycle accidents",
journal="British medical journal (clinical research edition)",
year="1984",
author="Richards, P. G.",
volume="288",
number="6419",
pages="758-758",
abstract="Abstract unavailable.",
language="",
issn="0267-0623",
doi="",
url="http://dx.doi.org/"
}