@article{ref1,
title="Psychological causes in aircraft accidents",
journal="Aeromedica acta",
year="1958",
author="van Wulfften Palthe, P.",
volume="6",
number="",
pages="69-80",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0568-0549",
doi="",
url="http://dx.doi.org/"
}