@article{ref1,
title="A target device to measure speed and accuracy in an open and closed environment",
journal="Research quarterly",
year="1972",
author="Del Rey, P.",
volume="43",
number="2",
pages="239-242",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0034-5377",
doi="",
url="http://dx.doi.org/"
}