@article{ref1,
title="Six-hour escape-avoidance work shift and production of stomach ulcers",
journal="Journal of comparative and physiological psychology",
year="1971",
author="Paré, W. P.",
volume="74",
number="3",
pages="459-466",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0021-9940",
doi="",
url="http://dx.doi.org/"
}