@article{ref1,
title="Results of the drug testing program at Southern Pacific Railroad",
journal="NIDA research monograph",
year="1989",
author="Taggart, R. W.",
volume="91",
number="",
pages="97-108",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1046-9516",
doi="",
url="http://dx.doi.org/"
}