@article{ref1,
title="Dangers of injuries to the head in soccer",
journal="Deutsches Medizinisches Journal",
year="1958",
author="Dorn, W.",
volume="9",
number="10",
pages="514-516",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0012-1320",
doi="",
url="http://dx.doi.org/"
}