@article{ref1,
title="An investigation into the effects of stress upon skilled performance",
journal="Ergonomics",
year="1969",
author="Hammerton, M. and Tickner, A. H.",
volume="12",
number="6",
pages="851-855",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}