@article{ref1,
title="Activity Level as a Function of Physically Enforced Inaction",
journal="Journal of psychology, The",
year="1946",
author="Siegel, Paul S.",
volume="21",
number="2",
pages="285-291",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0022-3980",
doi="10.1080/00223980.1946.9917287",
url="http://dx.doi.org/10.1080/00223980.1946.9917287"
}