@article{ref1,
title="Workplace drug abuse policy",
journal="Journal of health economics",
year="1994",
author="Hirth, R. A.",
volume="13",
number="3",
pages="373-8; discussion 379",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0167-6296",
doi="",
url="http://dx.doi.org/"
}