@article{ref1,
title="Damage to extremity joints due to occupational stress",
journal="Zeitschrift fur Orthopadie und Ihre Grenzgebiete",
year="1975",
author="Münch, K. W. and Koppelmann, J.",
volume="113",
number="4",
pages="659-663",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-3220",
doi="",
url="http://dx.doi.org/"
}