@article{ref1,
title="Medical Factors in Non-Fatal Aircraft Accidents",
journal="Aerospace medicine",
year="1963",
author="Urschel, D. L.",
volume="34",
number="6",
pages="547-547",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}