@article{ref1,
title="The judgment of facial expression",
journal="Journal of experimental psychology",
year="1930",
author="Frois-Wittman, J.",
volume="13",
number="2",
pages="113-151",
abstract="A new set of photographs of 32 &quot;expressions&quot; judged by 165 persons. Elementary features are variously described, but combine to characterize the whole face's &quot;expression.&quot; Any given muscle pattern is not constant, but relative to the rest of the pattern. (PsycINFO Database Record (c) 2012 APA, all rights reserved)<p />",
language="",
issn="0022-1015",
doi="10.1037/h0070158",
url="http://dx.doi.org/10.1037/h0070158"
}