@article{ref1,
title="The incidence of acoustic trauma in personnel of commercial airplanes",
journal="Zeitschrift fur die Gesamte Hygiene und Ihre Grenzgebiete",
year="1970",
author="Demus, H. G. and Lorenz, W.",
volume="16",
number="6",
pages="414-422",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0049-8610",
doi="",
url="http://dx.doi.org/"
}