@article{ref1,
title="Body movement during observation tasks",
journal="Annals of physiological anthropology",
year="1989",
author="Jürgens, H. W.",
volume="8",
number="1",
pages="33-35",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0287-8429",
doi="",
url="http://dx.doi.org/"
}