@article{ref1,
title="Facial expression of emotion while watching television violence",
journal="Western journal of medicine",
year="1974",
author="Ekman, P. and Liebert, R. and Friesen, Wallace V.",
volume="120",
number="4",
pages="310-311",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0093-0415",
doi="",
url="http://dx.doi.org/"
}