@article{ref1,
title="A Severity-Rate for Industrial Accidents and Sickness",
journal="Nature",
year="1944",
author="Whitfield, J. W.",
volume="154",
number="",
pages="637-638",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0028-0836",
doi="",
url="http://dx.doi.org/"
}