@article{ref1,
title="The specificity of the Duquenois color test for marihuana and hashish",
journal="Journal of forensic sciences",
year="1972",
author="Pitt, C. G. and Hendron, R. W. and Hsia, R. S.",
volume="17",
number="4",
pages="693-700",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-1198",
doi="",
url="http://dx.doi.org/"
}