@article{ref1,
title="Returning to work: The principles and practice of work hardening in industrial rehabilitation",
journal="Journal of safety research",
year="1990",
author="Sharp, CC",
volume="21",
number="4",
pages="166-167",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0022-4375",
doi="",
url="http://dx.doi.org/"
}