@article{ref1,
title="Reasons for discontinuing hashish use in a group of Central European athletes",
journal="Journal of drug education",
year="1988",
author="Duncan, D. F.",
volume="18",
number="1",
pages="49-53",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0047-2379",
doi="",
url="http://dx.doi.org/"
}