@article{ref1,
title="Investigation of temporal integration by video sampling",
journal="Perception",
year="1973",
author="Williams, R.",
volume="2",
number="4",
pages="441-490",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0301-0066",
doi="",
url="http://dx.doi.org/"
}