@article{ref1,
title="Accidents in old age",
journal="Hefte zur Unfallheilkunde",
year="1957",
author="Friedhoff, E.",
volume="55",
number="",
pages="134-138",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0085-1469",
doi="",
url="http://dx.doi.org/"
}