@article{ref1,
title="Some differences between real and apparent visual movement",
journal="Vision research",
year="1963",
author="KOLERS, P. A.",
volume="3",
number="",
pages="191-206",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0042-6989",
doi="",
url="http://dx.doi.org/"
}