@article{ref1,
title="Amphetamine, secobarbital, and athletic performance. II. Subjective evaluations of performance, mood states, and physical states",
journal="Journal of the American Medical Association",
year="1960",
author="Smith, G. M. and Beecher, H. K.",
volume="172",
number="",
pages="1502-1514",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0002-9955",
doi="",
url="http://dx.doi.org/"
}