@article{ref1,
title="Measurement of interior noise in passenger cars",
journal="Zeitschrift fur die Gesamte Hygiene und Ihre Grenzgebiete",
year="1969",
author="Henkel, W.",
volume="15",
number="4",
pages="225-228",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0049-8610",
doi="",
url="http://dx.doi.org/"
}