@article{ref1,
title="Aeronautic charts for night flying",
journal="Médecine Aéronautique et Spatiale",
year="1950",
author="Duguet, J.",
volume="5",
number="4",
pages="367-375",
abstract="<p>[Abstract unavailable]</p> <p>Language: un</p>",
language="un",
issn="0294-0817",
doi="",
url="http://dx.doi.org/"
}