@article{ref1,
title="Human factors in general aviation accidents",
journal="Aerospace medicine",
year="1967",
author="Dille, J. R. and Morris, E. W.",
volume="38",
number="10",
pages="1063-1066",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}