@article{ref1,
title="Impact of noise control techniques on the aviation industry",
journal="Aviation, space, and environmental medicine",
year="1976",
author="Becker, W. B.",
volume="47",
number="1",
pages="62-69",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-6562",
doi="",
url="http://dx.doi.org/"
}