@article{ref1,
title="Automobile head restraints--frequency of neck injury claims in relation to the presence of head restraints",
journal="American journal of public health",
year="1972",
author="Sorenson, W. W. and Kelley, A. B. and Haddon, William and O'neill, B.",
volume="62",
number="3",
pages="399-406",
abstract="Abstract unavailable.",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}