@article{ref1,
title="Amphetamine usage by medical students",
journal="Journal of medical education",
year="1966",
author="Smith, S. N. and Blachly, P. H.",
volume="41",
number="2",
pages="167-170",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0022-2577",
doi="",
url="http://dx.doi.org/"
}