@article{ref1,
title="Manual for the determination of narcotics and dangerous drugs in the urine",
journal="Psychopharmacology bulletin",
year="1966",
author="Parker, K. D. and Hine, C. H.",
volume="3",
number="3",
pages="18-42",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0048-5764",
doi="",
url="http://dx.doi.org/"
}