@article{ref1,
title="A method for evaluating aircraft acoustical comfort",
journal="Journal of aviation medicine",
year="1952",
author="Lippert, S. and Miller, M. M.",
volume="23",
number="1",
pages="54-66",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}