@article{ref1,
title="Confusion matrix analysis for form perception",
journal="Human factors",
year="1967",
author="Engstrand, R. D. and Moeller, G.",
volume="9",
number="5",
pages="439-446",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}