@article{ref1,
title="Development and application of a non-accident measure of flying safety performance",
journal="Journal of safety research",
year="1970",
author="Rockwell, T. H. and Bhise, VD and Clevinger, TR",
volume="2",
number="4",
pages="240-250",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0022-4375",
doi="",
url="http://dx.doi.org/"
}