@article{ref1,
title="The effect of repetition of relevant and irrelevant tasks over day and night work periods",
journal="Ergonomics",
year="1978",
author="Bonnet, M. H. and Webb, W. B.",
volume="21",
number="12",
pages="999-1005",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}