@article{ref1,
title="The role of payoffs and signal ratios in criterion changes during a monitoring task",
journal="Human factors",
year="1971",
author="Williges, R. C.",
volume="13",
number="3",
pages="261-267",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}