@article{ref1,
title="Contour effects on a brightness paradox",
journal="Vision research",
year="1970",
author="Bergström, S. S. and Rubenson, B.",
volume="10",
number="10",
pages="1057-1064",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0042-6989",
doi="",
url="http://dx.doi.org/"
}