@article{ref1,
title="Helicopter engine protection",
journal="Perfusion",
year="1997",
author="Stallard, P.",
volume="12",
number="4",
pages="263-267",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0267-6591",
doi="",
url="http://dx.doi.org/"
}