@article{ref1,
title="Airplane cockpit noise levels and pilot hearing sensitivity",
journal="Archives of environmental health",
year="1970",
author="Kronoveter, K. J. and Somerville, G. W.",
volume="20",
number="4",
pages="495-499",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0003-9896",
doi="",
url="http://dx.doi.org/"
}