@article{ref1,
title="Stress among crane operators",
journal="Journal of Occupational Medicine",
year="1984",
author="Cooper, Cary L. and Kelly, Maya",
volume="26",
number="8",
pages="575-578",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-1736",
doi="",
url="http://dx.doi.org/"
}