@article{ref1,
title="The effectiveness of bicyclist helmets: a study of 1,710 casualties",
journal="Journal of trauma",
year="1994",
author="Thompson, D. C.",
volume="36",
number="3",
pages="463-464",
abstract="Abstract unavailable.",
language="",
issn="0022-5282",
doi="",
url="http://dx.doi.org/"
}