@article{ref1,
title="Changes in psychomotor and mental task performance following physical work in standard conditions, and in a shift-working situation",
journal="Ergonomics",
year="1978",
author="Wojtczak-Jaroszowa, J. and Makowska, Z. and Rzepecki, H. and Banaszkiewicz, A. and Romejko, A.",
volume="21",
number="10",
pages="801-809",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}