@article{ref1,
title="The course of knee-ligament injuries",
journal="Acta orthopaedica Scandinavica, Supplementum",
year="1982",
author="Balkfors, B.",
volume="198",
number="",
pages="1-99",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0300-8827",
doi="",
url="http://dx.doi.org/"
}