@article{ref1,
title="What are the criteria for a permanent-disability pension (MAE) in isolated fractures of the thoracic and lumbar spine?",
journal="Hefte zur Unfallheilkunde",
year="1977",
author="Erdmann, H.",
volume="",
number="129",
pages="293-296",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0085-1469",
doi="",
url="http://dx.doi.org/"
}