@article{ref1,
title="Observations on spatial contrast and confluence in visual perception",
journal="British journal of psychology (1904)",
year="1907",
author="Smith, W. G. and Sowton, S. C. M.",
volume="2",
number="2",
pages="196-219",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0950-5652",
doi="10.1111/j.2044-8295.1907.tb00238.x",
url="http://dx.doi.org/10.1111/j.2044-8295.1907.tb00238.x"
}