@article{ref1,
title="Effects of stimulant and depressant drugs on physical persistence",
journal="Perceptual and motor skills",
year="1962",
author="Singh, S. D.",
volume="14",
number="2",
pages="270-270",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0031-5125",
doi="10.2466/pms.1962.14.2.270",
url="http://dx.doi.org/10.2466/pms.1962.14.2.270"
}