@article{ref1,
title="Safety performance analysis",
journal="Professional safety, journal of the American Society of Safety Engineers",
year="1983",
author="Earnest, R. E.",
volume="28",
number="4",
pages="21-4, 45",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0099-0027",
doi="",
url="http://dx.doi.org/"
}