@article{ref1,
title="Red card--aggression in sports",
journal="Ugeskrift for Laeger",
year="2006",
author="Jensen, K.",
volume="168",
number="51",
pages="4513-4513",
abstract="<p>[Abstract unavailable]</p> <p>Language: da</p>",
language="da",
issn="0041-5782",
doi="",
url="http://dx.doi.org/"
}