@article{ref1,
title="Noise environs and helmet performance for the P-1127 V-STOL aircraft. AMRL-TR-68-70",
journal="Aerospace medical research laboratories technical reports",
year="1968",
author="Sommer, H. C. and Rose, J. F. and Knoblach, W. C.",
volume="",
number="",
pages="1-22",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0192-317X",
doi="",
url="http://dx.doi.org/"
}