@article{ref1,
title="Amphetamine sulfate and performance. A critique",
journal="JAMA journal of the American Medical Association",
year="1961",
author="Pierson, W. R. and Cochran, W. G. and Smith, G. M. and Beecher, H. K.",
volume="177",
number="",
pages="345-349",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0098-7484",
doi="",
url="http://dx.doi.org/"
}