@article{ref1,
title="Noise problems associated with aircraft maintenance",
journal="Journal of aviation medicine",
year="1951",
author="Parrack, H. O. and Eldredge, D. H.",
volume="22",
number="6",
pages="470-476",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}