@article{ref1,
title="Physiological load and occupational injury",
journal="Social-Medicinsk Tidskrift",
year="1956",
author="Lundgren, N.",
volume="33",
number="1",
pages="9-16",
abstract="<p>[Abstract unavailable]</p><p>Language: sv</p>",
language="sv",
issn="0037-833X",
doi="",
url="http://dx.doi.org/"
}