@article{ref1,
title="Experimental studies of marihuana",
journal="American journal of psychiatry",
year="1968",
author="Clark, L. D. and Nakashima, E. N.",
volume="125",
number="3",
pages="135-140",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-953X",
doi="",
url="http://dx.doi.org/"
}