@article{ref1,
title="Federal courts have ruled workers must be warned",
journal="Occupational health and safety",
year="1978",
author="Keane, W. T.",
volume="47",
number="2",
pages="22-23",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0362-4064",
doi="",
url="http://dx.doi.org/"
}