@article{ref1,
title="Aeronautical accidents",
journal="Rivista di medicina aeronautica",
year="1950",
author="Pera, G. and Mangiacapra, A.",
volume="13",
number="3",
pages="455-466",
abstract="<p>[Abstract unavailable]</p> <p>Language: un</p>",
language="un",
issn="0301-6757",
doi="",
url="http://dx.doi.org/"
}