@article{ref1,
title="Morale and flying experience; results of a wartime study",
journal="Journal of mental science",
year="1949",
author="Stafford-clark, D.",
volume="95",
number="398",
pages="10-50",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0368-315X",
doi="",
url="http://dx.doi.org/"
}