@article{ref1,
title="The effect of threat- and task-oriented attitude upon performance under stress",
journal="Scandinavian journal of psychology",
year="1971",
author="Bergstrom, B. and Arnberg, P.",
volume="12",
number="1",
pages="14-20",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0036-5564",
doi="",
url="http://dx.doi.org/"
}