@article{ref1,
title="Aviation accidents during plane to earth firing exercises; possible factors of reproduction of these accidents",
journal="Médecine Aéronautique et Spatiale",
year="1953",
author="Schafer, G. E.",
volume="8",
number="1",
pages="87-92",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="0294-0817",
doi="",
url="http://dx.doi.org/"
}