@article{ref1,
title="Recoding of ultrasounds picked up near motors and modern airplanes at a fixed point",
journal="Médecine Aéronautique et Spatiale",
year="1950",
author="Grognot, P.",
volume="5",
number="4",
pages="355-366",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="0294-0817",
doi="",
url="http://dx.doi.org/"
}