@article{ref1,
title="Physical work capacity during the day and at night",
journal="Ergonomics",
year="1974",
author="Wojtczak-Jaroszowa, J. and Banaszkiewicz, A.",
volume="17",
number="2",
pages="193-198",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}