@article{ref1,
title="Safety of flight helmets in army aviation personnel serving in Vietnam",
journal="Aerospace medicine",
year="1971",
author="Bauman, D. and Lindstrom, E. E.",
volume="42",
number="1",
pages="90-92",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}