@article{ref1,
title="Risk of brain injury from soccer header",
journal="Unfallheilkunde",
year="1984",
author="Schneider, Karen",
volume="87",
number="1",
pages="40-42",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0341-5694",
doi="",
url="http://dx.doi.org/"
}