@article{ref1,
title="Drug use and achievement",
journal="International journal of the addictions",
year="1974",
author="Carlin, A. S. and Post, R. D.",
volume="9",
number="3",
pages="401-410",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-773X",
doi="",
url="http://dx.doi.org/"
}