@article{ref1,
title="Effective difference in influence of relative size on perceived relative distance",
journal="Perceptual and motor skills",
year="1964",
author="Epstein, William",
volume="18",
number="2",
pages="383-384",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0031-5125",
doi="10.2466/pms.1964.18.2.383",
url="http://dx.doi.org/10.2466/pms.1964.18.2.383"
}