@article{ref1,
title="Four patterns of campus marijuana use. II. Social aspects of use",
journal="International journal of the addictions",
year="1973",
author="Cheek, F. E. and Sarett-Barrie, M. and Holstein, C. M. and Newell, S. and Smith, S.",
volume="8",
number="2",
pages="333-351",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-773X",
doi="",
url="http://dx.doi.org/"
}