@article{ref1,
title="Aircraft accidents and aircraft instruments",
journal="Aerospace medicine",
year="1961",
author="Zeller, A. F. and Normand, G. H. and Burke, J. M.",
volume="32",
number="",
pages="42-51",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}