@article{ref1,
title="Visual perception of orientation",
journal="Perceptual and motor skills",
year="1961",
author="Edmonds, Irene A.",
volume="13",
number="1",
pages="91-98",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0031-5125",
doi="10.2466/pms.1961.13.1.91",
url="http://dx.doi.org/10.2466/pms.1961.13.1.91"
}