@article{ref1,
title="Dual-bed thin-layer chromatography for the separation and detection of drugs of abuse in urine",
journal="Journal of chromatography: A",
year="1973",
author="Broich, J. R. and Goldner, S. and Gourdet, G. and Andryauskas, S. and Umberger, C. J. and Hoffman, D. B.",
volume="80",
number="2",
pages="275-278",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0021-9673",
doi="",
url="http://dx.doi.org/"
}