@article{ref1,
title="Current flying, age, experience and non-jet accidents",
journal="Aerospace medicine",
year="1963",
author="Zeller, A. F. and Lentz, E. C. and Burke, J. M.",
volume="34",
number="",
pages="222-225",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}