@article{ref1,
title="Studies on psycho-clinical aspects of long-term marihuana use in 124 cases",
journal="International journal of the addictions",
year="1973",
author="Chopra, G. S.",
volume="8",
number="6",
pages="1015-1026",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-773X",
doi="",
url="http://dx.doi.org/"
}